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12121103223 = 331014879127
BaseRepresentation
bin10110100100111100…
…10101101101110111
31011021201222211202000
423102132111231313
5144311000300343
65322433150343
7606241451235
oct132236255567
934251884660
1012121103223
115160057289
1224233bb3b3
1311b2286938
1482db43955
154ae1e2ed3
hex2d2795b77

12121103223 has 32 divisors (see below), whose sum is σ = 18174213120. Its totient is φ = 7983424800.

The previous prime is 12121103213. The next prime is 12121103243. The reversal of 12121103223 is 32230112121.

It is not a de Polignac number, because 12121103223 - 217 = 12120972151 is a prime.

It is a super-4 number, since 4×121211032234 (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12121103196 and 12121103205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121103213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1323486 + ... + 1332612.

It is an arithmetic number, because the mean of its divisors is an integer number (567944160).

Almost surely, 212121103223 is an apocalyptic number.

12121103223 is a deficient number, since it is larger than the sum of its proper divisors (6053109897).

12121103223 is a wasteful number, since it uses less digits than its factorization.

12121103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724 (or 9718 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12121103223 its reverse (32230112121), we get a palindrome (44351215344).

The spelling of 12121103223 in words is "twelve billion, one hundred twenty-one million, one hundred three thousand, two hundred twenty-three".

Divisors: 1 3 9 27 101 303 487 909 1461 2727 4383 9127 13149 27381 49187 82143 147561 246429 442683 921827 1328049 2765481 4444849 8296443 13334547 24889329 40003641 120010923 448929749 1346789247 4040367741 12121103223