121029975 has 72 divisors (see below), whose sum is σ = 239865600. Its totient is φ = 57844800.

The previous prime is 121029971. The next prime is 121029977. The reversal of 121029975 is 579920121.

It is not a de Polignac number, because 121029975 - 2² = 121029971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121029971) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 195216 + ... + 195834.

Almost surely, 2^121029975 is an apocalyptic number.

121029975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121029975 is a deficient number, since it is larger than the sum of its proper divisors (118835625).

121029975 is a wasteful number, since it uses less digits than its factorization.

121029975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 717 counting only the distinct ones).

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

The square root of 121029975 is about 11001.3624156283. The cubic root of 121029975 is about 494.6495836445.

The spelling of 121029975 in words is "one hundred twenty-one million, twenty-nine thousand, nine hundred seventy-five".