12197136291 has 32 divisors (see below), whose sum is σ = 16741382400. Its totient is φ = 7895781504.

The previous prime is 12197136283. The next prime is 12197136323. The reversal of 12197136291 is 19263179121.

It is not a de Polignac number, because 12197136291 - 2³ = 12197136283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12197136271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7178160 + ... + 7179858.

It is an arithmetic number, because the mean of its divisors is an integer number (523168200).

Almost surely, 2^12197136291 is an apocalyptic number.

12197136291 is a deficient number, since it is larger than the sum of its proper divisors (4544246109).

12197136291 is a wasteful number, since it uses less digits than its factorization.

12197136291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195.

The product of its digits is 40824, while the sum is 42.

The spelling of 12197136291 in words is "twelve billion, one hundred ninety-seven million, one hundred thirty-six thousand, two hundred ninety-one".