120021121100100 has 72 divisors (see below), whose sum is σ = 378830302246368. Its totient is φ = 29096029356800.

The previous prime is 120021121100057. The next prime is 120021121100161. The reversal of 120021121100100 is 1001121120021.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 18185015049 + ... + 18185021648.

It is an arithmetic number, because the mean of its divisors is an integer number (5261531975644).

Almost surely, 2^{120021121100100} is an apocalyptic number.

120021121100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021121100100 is an abundant number, since it is smaller than the sum of its proper divisors (258809181146268).

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

120021121100100 is a wasteful number, since it uses less digits than its factorization.

120021121100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36370036725 (or 36370036718 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120021121100100 its reverse (1001121120021), we get a palindrome (121022242220121).

The spelling of 120021121100100 in words is "one hundred twenty trillion, twenty-one billion, one hundred twenty-one million, one hundred thousand, one hundred".