121012011992 has 16 divisors (see below), whose sum is σ = 229446934200. Its totient is φ = 59826162880.

The previous prime is 121012011983. The next prime is 121012012031. The reversal of 121012011992 is 299110210121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84979634 + ... + 84981057.

Almost surely, 2^121012011992 is an apocalyptic number.

It is an amenable number.

121012011992 is a deficient number, since it is larger than the sum of its proper divisors (108434922208).

121012011992 is a wasteful number, since it uses less digits than its factorization.

121012011992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169960786 (or 169960782 counting only the distinct ones).

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

The spelling of 121012011992 in words is "one hundred twenty-one billion, twelve million, eleven thousand, nine hundred ninety-two".