220121200012100 has 36 divisors (see below), whose sum is σ = 488771445989904. Its totient is φ = 86000840933280.

The previous prime is 220121200012097. The next prime is 220121200012141. The reversal of 220121200012100 is 1210002121022.

It is a super-3 number, since 3×220121200012100³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25595484074 + ... + 25595492673.

Almost surely, 2^{220121200012100} is an apocalyptic number.

220121200012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121200012100 is an abundant number, since it is smaller than the sum of its proper divisors (268650245977804).

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

220121200012100 is a wasteful number, since it uses less digits than its factorization.

220121200012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51190976804 (or 51190976797 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220121200012100 its reverse (1210002121022), we get a palindrome (221331202133122).

The spelling of 220121200012100 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred million, twelve thousand, one hundred".