121011201992 has 16 divisors (see below), whose sum is σ = 228254664960. Its totient is φ = 60143291344.

The previous prime is 121011201977. The next prime is 121011202021. The reversal of 121011201992 is 299102110121.

It is a super-2 number, since 2×121011201992² (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, 45287288 + ... + 45289959.

It is an arithmetic number, because the mean of its divisors is an integer number (14265916560).

Almost surely, 2^121011201992 is an apocalyptic number.

It is an amenable number.

121011201992 is a deficient number, since it is larger than the sum of its proper divisors (107243462968).

121011201992 is a wasteful number, since it uses less digits than its factorization.

121011201992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90577420 (or 90577416 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 121011201992 in words is "one hundred twenty-one billion, eleven million, two hundred one thousand, nine hundred ninety-two".