121012101992 has 16 divisors (see below), whose sum is σ = 230284224960. Its totient is φ = 59602975344.

The previous prime is 121012101979. The next prime is 121012102007. The reversal of 121012101992 is 299101210121.

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, 112883888 + ... + 112884959.

It is an arithmetic number, because the mean of its divisors is an integer number (14392764060).

Almost surely, 2^121012101992 is an apocalyptic number.

It is an amenable number.

121012101992 is a deficient number, since it is larger than the sum of its proper divisors (109272122968).

121012101992 is a wasteful number, since it uses less digits than its factorization.

121012101992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225768920 (or 225768916 counting only the distinct ones).

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

The spelling of 121012101992 in words is "one hundred twenty-one billion, twelve million, one hundred one thousand, nine hundred ninety-two".