121502979 has 12 divisors (see below), whose sum is σ = 189004816. Its totient is φ = 74770992.

The previous prime is 121502963. The next prime is 121502999. The reversal of 121502979 is 979205121.

It is not a de Polignac number, because 121502979 - 2⁴ = 121502963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121502999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519127 + ... + 519360.

Almost surely, 2^121502979 is an apocalyptic number.

121502979 is a deficient number, since it is larger than the sum of its proper divisors (67501837).

121502979 is a wasteful number, since it uses less digits than its factorization.

121502979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038506 (or 1038503 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 121502979 is about 11022.8389718802. The cubic root of 121502979 is about 495.2931352193.

It can be divided in two parts, 12150 and 2979, that added together give a square (15129 = 123²).

The spelling of 121502979 in words is "one hundred twenty-one million, five hundred two thousand, nine hundred seventy-nine".