120221212100100 has 72 divisors (see below), whose sum is σ = 347854446182208. Its totient is φ = 32057662166400.

The previous prime is 120221212100071. The next prime is 120221212100159. The reversal of 120221212100100 is 1001212122021.

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 120221212100100.

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, 1031904 + ... + 15540503.

Almost surely, 2^{120221212100100} is an apocalyptic number.

120221212100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120221212100100 is an abundant number, since it is smaller than the sum of its proper divisors (227633234082108).

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

120221212100100 is a wasteful number, since it uses less digits than its factorization.

120221212100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596605 (or 16596598 counting only the distinct ones).

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

Adding to 120221212100100 its reverse (1001212122021), we get a palindrome (121222424222121).

The spelling of 120221212100100 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, one hundred".