13221313124 has 6 divisors (see below), whose sum is σ = 23137297974. Its totient is φ = 6610656560.

The previous prime is 13221313093. The next prime is 13221313139. The reversal of 13221313124 is 42131312231.

It can be written as a sum of positive squares in only one way, i.e., 9791102500 + 3430210624 = 98950^2 + 58568^2 .

It is a super-3 number, since 3×13221313124³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13221313124.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1652664137 + ... + 1652664144.

It is an arithmetic number, because the mean of its divisors is an integer number (3856216329).

Almost surely, 2^13221313124 is an apocalyptic number.

It is an amenable number.

13221313124 is a deficient number, since it is larger than the sum of its proper divisors (9915984850).

13221313124 is a wasteful number, since it uses less digits than its factorization.

13221313124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305328285 (or 3305328283 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 13221313124 its reverse (42131312231), we get a palindrome (55352625355).

The spelling of 13221313124 in words is "thirteen billion, two hundred twenty-one million, three hundred thirteen thousand, one hundred twenty-four".