121229975 has 24 divisors (see below), whose sum is σ = 167556240. Its totient is φ = 86469120.

The previous prime is 121229963. The next prime is 121229981. The reversal of 121229975 is 579922121.

It is not a de Polignac number, because 121229975 - 2¹⁸ = 120967831 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 569 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (6981510).

Almost surely, 2^121229975 is an apocalyptic number.

121229975 is a deficient number, since it is larger than the sum of its proper divisors (46326265).

121229975 is a wasteful number, since it uses less digits than its factorization.

121229975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15059 (or 15054 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 121229975 is about 11010.4484468163. The cubic root of 121229975 is about 494.9219004083.

The spelling of 121229975 in words is "one hundred twenty-one million, two hundred twenty-nine thousand, nine hundred seventy-five".