121972972 has 48 divisors (see below), whose sum is σ = 242049024. Its totient is φ = 53280000.

The previous prime is 121972969. The next prime is 121972993. The reversal of 121972972 is 279279121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303972 + ... + 304372.

It is an arithmetic number, because the mean of its divisors is an integer number (5042688).

Almost surely, 2^121972972 is an apocalyptic number.

It is an amenable number.

121972972 is a deficient number, since it is larger than the sum of its proper divisors (120076052).

121972972 is a wasteful number, since it uses less digits than its factorization.

121972972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 31752, while the sum is 40.

The square root of 121972972 is about 11044.1374493439. The cubic root of 121972972 is about 495.9309379650.

The spelling of 121972972 in words is "one hundred twenty-one million, nine hundred seventy-two thousand, nine hundred seventy-two".