11231321144 has 16 divisors (see below), whose sum is σ = 21784890600. Its totient is φ = 5422016992.

The previous prime is 11231321141. The next prime is 11231321161. The reversal of 11231321144 is 44112313211.

It is a super-2 number, since 2×11231321144² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231321141) 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, 24205202 + ... + 24205665.

Almost surely, 2^11231321144 is an apocalyptic number.

It is an amenable number.

11231321144 is a deficient number, since it is larger than the sum of its proper divisors (10553569456).

11231321144 is a wasteful number, since it uses less digits than its factorization.

11231321144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48410902 (or 48410898 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 11231321144 its reverse (44112313211), we get a palindrome (55343634355).

The spelling of 11231321144 in words is "eleven billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-four".