100512120520 has 32 divisors (see below), whose sum is σ = 258459739200. Its totient is φ = 34461298368.

The previous prime is 100512120503. The next prime is 100512120521. The reversal of 100512120520 is 25021215001.

It is not an unprimeable number, because it can be changed into a prime (100512120521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179485650 + ... + 179486209.

It is an arithmetic number, because the mean of its divisors is an integer number (8076866850).

Almost surely, 2^100512120520 is an apocalyptic number.

100512120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100512120520 is an abundant number, since it is smaller than the sum of its proper divisors (157947618680).

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

100512120520 is a wasteful number, since it uses less digits than its factorization.

100512120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358971877 (or 358971873 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 100512120520 its reverse (25021215001), we get a palindrome (125533335521).

The spelling of 100512120520 in words is "one hundred billion, five hundred twelve million, one hundred twenty thousand, five hundred twenty".