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1220013232230 = 23513149169312401
BaseRepresentation
bin10001110000001110011…
…101001001000001100110
311022122001211010122102210
4101300032131021001212
5124442041341412410
62332244421344250
7154100031240612
oct21601635110146
94278054118383
101220013232230
1143044a733741
12178543b68086
138b07b946460
1443098496342
1521b06bbc220
hex11c0e749066

1220013232230 has 128 divisors (see below), whose sum is σ = 3176558985600. Its totient is φ = 298095206400.

The previous prime is 1220013232219. The next prime is 1220013232241. The reversal of 1220013232230 is 322323100221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220013232219) and next prime (1220013232241).

It is a junction number, because it is equal to n+sod(n) for n = 1220013232197 and 1220013232206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98374030 + ... + 98386430.

It is an arithmetic number, because the mean of its divisors is an integer number (24816867075).

Almost surely, 21220013232230 is an apocalyptic number.

1220013232230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220013232230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588279492800).

1220013232230 is an abundant number, since it is smaller than the sum of its proper divisors (1956545753370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220013232230 is a wasteful number, since it uses less digits than its factorization.

1220013232230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1220013232230 its reverse (322323100221), we get a palindrome (1542336332451).

The spelling of 1220013232230 in words is "one trillion, two hundred twenty billion, thirteen million, two hundred thirty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 149 195 298 390 447 745 894 1490 1693 1937 2235 3386 3874 4470 5079 5811 8465 9685 10158 11622 12401 16930 19370 22009 24802 25395 29055 37203 44018 50790 58110 62005 66027 74406 110045 124010 132054 161213 186015 220090 252257 322426 330135 372030 483639 504514 660270 756771 806065 967278 1261285 1513542 1612130 1847749 2418195 2522570 3279341 3695498 3783855 4836390 5543247 6558682 7567710 9238745 9838023 11086494 16396705 18477490 19676046 20994893 24020737 27716235 32793410 41989786 48041474 49190115 55432470 62984679 72062211 98380230 104974465 120103685 125969358 144124422 209948930 240207370 272933609 314923395 360311055 545867218 629846790 720622110 818800827 1364668045 1637601654 2729336090 3128239057 4094004135 6256478114 8188008270 9384717171 15641195285 18769434342 31282390570 40667107741 46923585855 81334215482 93847171710 122001323223 203335538705 244002646446 406671077410 610006616115 1220013232230