121954214756 has 24 divisors (see below), whose sum is σ = 232839141024. Its totient is φ = 55429577280.

The previous prime is 121954214741. The next prime is 121954214867. The reversal of 121954214756 is 657412459121.

It is a self number, because there is not a number n which added to its sum of digits gives 121954214756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533456 + ... + 726968.

It is an arithmetic number, because the mean of its divisors is an integer number (9701630876).

Almost surely, 2^121954214756 is an apocalyptic number.

It is an amenable number.

121954214756 is a deficient number, since it is larger than the sum of its proper divisors (110884926268).

121954214756 is a wasteful number, since it uses less digits than its factorization.

121954214756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207851 (or 207849 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The spelling of 121954214756 in words is "one hundred twenty-one billion, nine hundred fifty-four million, two hundred fourteen thousand, seven hundred fifty-six".