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BaseRepresentation
bin1100110111101111000…
…1111001011110001000
3210010202020022100210110
43031323301321132020
512110323210310440
6245325305114320
721655363034352
oct3157361713610
9703666270713
10221120010120
118585a532419
1236a307889a0
1317b0ba62699
14a9b90340d2
155b426ca080
hex337bc79788

221120010120 has 64 divisors (see below), whose sum is σ = 663919312320. Its totient is φ = 58915622144.

The previous prime is 221120010119. The next prime is 221120010151. The reversal of 221120010120 is 21010021122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 221120010096 and 221120010105.

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, 633747 + ... + 918626.

It is an arithmetic number, because the mean of its divisors is an integer number (10373739255).

Almost surely, 2221120010120 is an apocalyptic number.

221120010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120010120 is an abundant number, since it is smaller than the sum of its proper divisors (442799302200).

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

221120010120 is a wasteful number, since it uses less digits than its factorization.

221120010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553574 (or 1553570 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221120010120 its reverse (21010021122), we get a palindrome (242130031242).

The spelling of 221120010120 in words is "two hundred twenty-one billion, one hundred twenty million, ten thousand, one hundred twenty".