13121303224 has 8 divisors (see below), whose sum is σ = 24602443560. Its totient is φ = 6560651608.

The previous prime is 13121303219. The next prime is 13121303231. The reversal of 13121303224 is 42230312131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13121303195 and 13121303204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820081444 + ... + 820081459.

It is an arithmetic number, because the mean of its divisors is an integer number (3075305445).

Almost surely, 2^13121303224 is an apocalyptic number.

It is an amenable number.

13121303224 is a deficient number, since it is larger than the sum of its proper divisors (11481140336).

13121303224 is a wasteful number, since it uses less digits than its factorization.

13121303224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640162909 (or 1640162905 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13121303224 its reverse (42230312131), we get a palindrome (55351615355).

The spelling of 13121303224 in words is "thirteen billion, one hundred twenty-one million, three hundred three thousand, two hundred twenty-four".