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120211201220 = 225111134835527
BaseRepresentation
bin110111111110100100…
…1010101110011000100
3102111021201120202002212
41233331021111303010
53432143031414340
6131120235122552
711453642231255
oct1577511256304
9374251522085
10120211201220
1146a880a8790
121b36a5a3458
13b449b93bc6
145b65402b2c
1531d87c3a65
hex1bfd255cc4

120211201220 has 48 divisors (see below), whose sum is σ = 277830096768. Its totient is φ = 43326312960.

The previous prime is 120211201207. The next prime is 120211201307. The reversal of 120211201220 is 22102112021.

It is a junction number, because it is equal to n+sod(n) for n = 120211201195 and 120211201204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2392904 + ... + 2442623.

It is an arithmetic number, because the mean of its divisors is an integer number (5788127016).

Almost surely, 2120211201220 is an apocalyptic number.

120211201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120211201220 is an abundant number, since it is smaller than the sum of its proper divisors (157618895548).

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

120211201220 is a wasteful number, since it uses less digits than its factorization.

120211201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835660 (or 4835658 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120211201220 its reverse (22102112021), we get a palindrome (142313313241).

The spelling of 120211201220 in words is "one hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 113 220 226 452 565 1130 1243 2260 2486 4972 6215 12430 24860 4835527 9671054 19342108 24177635 48355270 53190797 96710540 106381594 212763188 265953985 531907970 546414551 1063815940 1092829102 2185658204 2732072755 5464145510 6010560061 10928291020 12021120122 24042240244 30052800305 60105600610 120211201220