12122009975 has 72 divisors (see below), whose sum is σ = 16362109008. Its totient is φ = 8904038400.

The previous prime is 12122009971. The next prime is 12122009983. The reversal of 12122009975 is 57990022121.

It is not a de Polignac number, because 12122009975 - 2² = 12122009971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122009971) 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, 53400812 + ... + 53401038.

It is an arithmetic number, because the mean of its divisors is an integer number (227251514).

Almost surely, 2^12122009975 is an apocalyptic number.

12122009975 is a deficient number, since it is larger than the sum of its proper divisors (4240099033).

12122009975 is a wasteful number, since it uses less digits than its factorization.

12122009975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 409 counting only the distinct ones).

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

The spelling of 12122009975 in words is "twelve billion, one hundred twenty-two million, nine thousand, nine hundred seventy-five".