120012210122100 has 36 divisors (see below), whose sum is σ = 347235327954144. Its totient is φ = 32003256032480.

The previous prime is 120012210122093. The next prime is 120012210122137. The reversal of 120012210122100 is 1221012210021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120012210122100.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 200020349904 + ... + 200020350503.

It is an arithmetic number, because the mean of its divisors is an integer number (9645425776504).

Almost surely, 2^{120012210122100} is an apocalyptic number.

120012210122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012210122100 is an abundant number, since it is smaller than the sum of its proper divisors (227223117832044).

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

120012210122100 is a wasteful number, since it uses less digits than its factorization.

120012210122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400040700424 (or 400040700417 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120012210122100 its reverse (1221012210021), we get a palindrome (121233222332121).

The spelling of 120012210122100 in words is "one hundred twenty trillion, twelve billion, two hundred ten million, one hundred twenty-two thousand, one hundred".