11122431144 has 64 divisors (see below), whose sum is σ = 30343680000. Its totient is φ = 3369347520.

The previous prime is 11122431143. The next prime is 11122431209. The reversal of 11122431144 is 44113422111.

It is a happy number.

11122431144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11122431144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11122431143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1262547 + ... + 1271325.

It is an arithmetic number, because the mean of its divisors is an integer number (474120000).

Almost surely, 2^11122431144 is an apocalyptic number.

It is an amenable number.

11122431144 is an abundant number, since it is smaller than the sum of its proper divisors (19221248856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11122431144 is a wasteful number, since it uses less digits than its factorization.

11122431144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13598 (or 13594 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

Adding to 11122431144 its reverse (44113422111), we get a palindrome (55235853255).

The spelling of 11122431144 in words is "eleven billion, one hundred twenty-two million, four hundred thirty-one thousand, one hundred forty-four".