11213131144 has 16 divisors (see below), whose sum is σ = 21070633500. Its totient is φ = 5594295552.

The previous prime is 11213131129. The next prime is 11213131157. The reversal of 11213131144 is 44113131211.

It can be written as a sum of positive squares in 2 ways, for example, as 11208456900 + 4674244 = 105870^2 + 2162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529869 + ... + 1537180.

Almost surely, 2^11213131144 is an apocalyptic number.

It is an amenable number.

11213131144 is a deficient number, since it is larger than the sum of its proper divisors (9857502356).

11213131144 is a wasteful number, since it uses less digits than its factorization.

11213131144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067512 (or 3067508 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 11213131144 its reverse (44113131211), we get a palindrome (55326262355).

The spelling of 11213131144 in words is "eleven billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred forty-four".