121112221080 has 64 divisors (see below), whose sum is σ = 363375185760. Its totient is φ = 32293168128.

The previous prime is 121112221063. The next prime is 121112221081. The reversal of 121112221080 is 80122211121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206084 + ... + 1302636.

Almost surely, 2^121112221080 is an apocalyptic number.

121112221080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112221080 is an abundant number, since it is smaller than the sum of its proper divisors (242262964680).

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

121112221080 is a wasteful number, since it uses less digits than its factorization.

121112221080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107020 (or 107016 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 121112221080 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, eighty".