121961923196652 has 216 divisors, whose sum is σ = 393390001669392. Its totient is φ = 31503401798400.

The previous prime is 121961923196651. The next prime is 121961923196671. The reversal of 121961923196652 is 256691329169121.

121961923196652 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 619 + 2 + 3 + 1 + 9 + 6 + 6 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 121961923196652.

It is not an unprimeable number, because it can be changed into a prime (121961923196651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13850863 + ... + 20875110.

Almost surely, 2^{121961923196652} is an apocalyptic number.

121961923196652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121961923196652 is an abundant number, since it is smaller than the sum of its proper divisors (271428078472740).

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

121961923196652 is a wasteful number, since it uses less digits than its factorization.

121961923196652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34726189 (or 34726177 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 63.

The spelling of 121961923196652 in words is "one hundred twenty-one trillion, nine hundred sixty-one billion, nine hundred twenty-three million, one hundred ninety-six thousand, six hundred fifty-two".