121755370112 has 32 divisors (see below), whose sum is σ = 253105598880. Its totient is φ = 58230827776.

The previous prime is 121755370103. The next prime is 121755370127. The reversal of 121755370112 is 211073557121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×121755370112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20675618 + ... + 20681505.

It is an arithmetic number, because the mean of its divisors is an integer number (7909549965).

Almost surely, 2^121755370112 is an apocalyptic number.

It is an amenable number.

121755370112 is an abundant number, since it is smaller than the sum of its proper divisors (131350228768).

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

121755370112 is an equidigital number, since it uses as much as digits as its factorization.

121755370112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41357160 (or 41357148 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 121755370112 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy thousand, one hundred twelve".