121011001021992 has 32 divisors (see below), whose sum is σ = 302529546381600. Its totient is φ = 40336727830464.

The previous prime is 121011001021987. The next prime is 121011001022017. The reversal of 121011001021992 is 299120100110121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13389498 + ... + 20525609.

It is an arithmetic number, because the mean of its divisors is an integer number (9454048324425).

Almost surely, 2^{121011001021992} is an apocalyptic number.

121011001021992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121011001021992 is an abundant number, since it is smaller than the sum of its proper divisors (181518545359608).

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

121011001021992 is a wasteful number, since it uses less digits than its factorization.

121011001021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34063785 (or 34063781 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 30.

The spelling of 121011001021992 in words is "one hundred twenty-one trillion, eleven billion, one million, twenty-one thousand, nine hundred ninety-two".