11572217231 has 2 divisors, whose sum is σ = 11572217232. Its totient is φ = 11572217230.

The previous prime is 11572217227. The next prime is 11572217249. The reversal of 11572217231 is 13271227511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11572217231 - 2² = 11572217227 is a prime.

It is a super-2 number, since 2×11572217231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11572217281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786108615 + 5786108616.

It is an arithmetic number, because the mean of its divisors is an integer number (5786108616).

Almost surely, 2^11572217231 is an apocalyptic number.

11572217231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572217231 is an equidigital number, since it uses as much as digits as its factorization.

11572217231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 32.

The spelling of 11572217231 in words is "eleven billion, five hundred seventy-two million, two hundred seventeen thousand, two hundred thirty-one".