121122100021992 has 64 divisors (see below), whose sum is σ = 310209450667200. Its totient is φ = 39386925365760.

The previous prime is 121122100021987. The next prime is 121122100022023. The reversal of 121122100021992 is 299120001221121.

It is a super-2 number, since 2×121122100021992² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12649758 + ... + 20056434.

It is an arithmetic number, because the mean of its divisors is an integer number (4847022666675).

Almost surely, 2^{121122100021992} is an apocalyptic number.

121122100021992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121122100021992 is an abundant number, since it is smaller than the sum of its proper divisors (189087350645208).

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

121122100021992 is a wasteful number, since it uses less digits than its factorization.

121122100021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423346 (or 7423342 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 121122100021992 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred million, twenty-one thousand, nine hundred ninety-two".