100120121232 has 40 divisors (see below), whose sum is σ = 273857980896. Its totient is φ = 31410233856.

The previous prime is 100120121219. The next prime is 100120121239. The reversal of 100120121232 is 232121021001.

It is not an unprimeable number, because it can be changed into a prime (100120121239) 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, 61347298 + ... + 61348929.

Almost surely, 2^100120121232 is an apocalyptic number.

100120121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100120121232 is an abundant number, since it is smaller than the sum of its proper divisors (173737859664).

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

100120121232 is a wasteful number, since it uses less digits than its factorization.

100120121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122696255 (or 122696249 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 100120121232 its reverse (232121021001), we get a palindrome (332241142233).

The spelling of 100120121232 in words is "one hundred billion, one hundred twenty million, one hundred twenty-one thousand, two hundred thirty-two".