11122211031131 has 4 divisors (see below), whose sum is σ = 11168747479200. Its totient is φ = 11075674583064.

The previous prime is 11122211031079. The next prime is 11122211031149. The reversal of 11122211031131 is 13113011222111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122211031131 is a prime.

It is a super-2 number, since 2×11122211031131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122211030131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23268223676 + ... + 23268224153.

It is an arithmetic number, because the mean of its divisors is an integer number (2792186869800).

Almost surely, 2^{11122211031131} is an apocalyptic number.

11122211031131 is a deficient number, since it is larger than the sum of its proper divisors (46536448069).

11122211031131 is an equidigital number, since it uses as much as digits as its factorization.

11122211031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46536448068.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 11122211031131 its reverse (13113011222111), we get a palindrome (24235222253242).

The spelling of 11122211031131 in words is "eleven trillion, one hundred twenty-two billion, two hundred eleven million, thirty-one thousand, one hundred thirty-one".