11131321222 has 16 divisors (see below), whose sum is σ = 19106226720. Its totient is φ = 4764575808.

The previous prime is 11131321219. The next prime is 11131321261. The reversal of 11131321222 is 22212313111.

It is a self number, because there is not a number n which added to its sum of digits gives 11131321222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487647 + ... + 509962.

It is an arithmetic number, because the mean of its divisors is an integer number (1194139170).

Almost surely, 2^11131321222 is an apocalyptic number.

11131321222 is a deficient number, since it is larger than the sum of its proper divisors (7974905498).

11131321222 is an equidigital number, since it uses as much as digits as its factorization.

11131321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998415.

The product of its digits is 144, while the sum is 19.

Adding to 11131321222 its reverse (22212313111), we get a palindrome (33343634333).

The spelling of 11131321222 in words is "eleven billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty-two".