13211131224 has 32 divisors (see below), whose sum is σ = 34766136000. Its totient is φ = 4171936032.

The previous prime is 13211131223. The next prime is 13211131247. The reversal of 13211131224 is 42213111231.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13211131224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211131223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14485434 + ... + 14486345.

It is an arithmetic number, because the mean of its divisors is an integer number (1086441750).

Almost surely, 2^13211131224 is an apocalyptic number.

It is an amenable number.

13211131224 is an abundant number, since it is smaller than the sum of its proper divisors (21555004776).

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

13211131224 is a wasteful number, since it uses less digits than its factorization.

13211131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28971807 (or 28971803 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 13211131224 its reverse (42213111231), we get a palindrome (55424242455).

The spelling of 13211131224 in words is "thirteen billion, two hundred eleven million, one hundred thirty-one thousand, two hundred twenty-four".