121943912392 has 64 divisors (see below), whose sum is σ = 237599616240. Its totient is φ = 58624819200.

The previous prime is 121943912351. The next prime is 121943912437. The reversal of 121943912392 is 293219349121.

It can be written as a sum of positive squares in 8 ways, for example, as 30683127556 + 91260784836 = 175166^2 + 302094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21847042 + ... + 21852622.

Almost surely, 2^121943912392 is an apocalyptic number.

It is an amenable number.

121943912392 is a deficient number, since it is larger than the sum of its proper divisors (115655703848).

121943912392 is a wasteful number, since it uses less digits than its factorization.

121943912392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482 (or 6478 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The spelling of 121943912392 in words is "one hundred twenty-one billion, nine hundred forty-three million, nine hundred twelve thousand, three hundred ninety-two".