120121122100 has 72 divisors (see below), whose sum is σ = 298917618048. Its totient is φ = 41043753600.

The previous prime is 120121122097. The next prime is 120121122139. The reversal of 120121122100 is 1221121021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87736 + ... + 497935.

It is an arithmetic number, because the mean of its divisors is an integer number (4151633584).

Almost surely, 2^120121122100 is an apocalyptic number.

120121122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121122100 is an abundant number, since it is smaller than the sum of its proper divisors (178796495948).

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

120121122100 is a wasteful number, since it uses less digits than its factorization.

120121122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585985 (or 585978 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120121122100 its reverse (1221121021), we get a palindrome (121342243121).

The spelling of 120121122100 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred".