121901161964 has 6 divisors (see below), whose sum is σ = 213327033444. Its totient is φ = 60950580980.

The previous prime is 121901161939. The next prime is 121901161973. The reversal of 121901161964 is 469161109121.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15237645242 + ... + 15237645249.

It is an arithmetic number, because the mean of its divisors is an integer number (35554505574).

Almost surely, 2^121901161964 is an apocalyptic number.

It is an amenable number.

121901161964 is a deficient number, since it is larger than the sum of its proper divisors (91425871480).

121901161964 is a wasteful number, since it uses less digits than its factorization.

121901161964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30475290495 (or 30475290493 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 121901161964 in words is "one hundred twenty-one billion, nine hundred one million, one hundred sixty-one thousand, nine hundred sixty-four".