120831563534220 has 192 divisors, whose sum is σ = 468680004172800. Its totient is φ = 25107857349120.

The previous prime is 120831563534189. The next prime is 120831563534249. The reversal of 120831563534220 is 22435365138021.

120831563534220 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 3 + 1 + 5 + 635 + 3 + 4 + 2 + 2 + 0 = 666.

120831563534220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×120831563534220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1452959425 + ... + 1453042584.

It is an arithmetic number, because the mean of its divisors is an integer number (2441041688400).

Almost surely, 2^{120831563534220} is an apocalyptic number.

120831563534220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120831563534220 is an abundant number, since it is smaller than the sum of its proper divisors (347848440638580).

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

120831563534220 is a wasteful number, since it uses less digits than its factorization.

120831563534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906002045 (or 2906002037 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 120831563534220 in words is "one hundred twenty trillion, eight hundred thirty-one billion, five hundred sixty-three million, five hundred thirty-four thousand, two hundred twenty".