11572220227 has 4 divisors (see below), whose sum is σ = 11573641216. Its totient is φ = 11570799240.

The previous prime is 11572220221. The next prime is 11572220249. The reversal of 11572220227 is 72202227511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72202227511 = 107 ⋅674787173.

It is a cyclic number.

It is not a de Polignac number, because 11572220227 - 2²³ = 11563831619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11572220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698208 + ... + 714589.

It is an arithmetic number, because the mean of its divisors is an integer number (2893410304).

Almost surely, 2^11572220227 is an apocalyptic number.

11572220227 is a deficient number, since it is larger than the sum of its proper divisors (1420989).

11572220227 is an equidigital number, since it uses as much as digits as its factorization.

11572220227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420988.

The product of its (nonzero) digits is 7840, while the sum is 31.

Adding to 11572220227 its reverse (72202227511), we get a palindrome (83774447738).

The spelling of 11572220227 in words is "eleven billion, five hundred seventy-two million, two hundred twenty thousand, two hundred twenty-seven".