13220244002 has 24 divisors (see below), whose sum is σ = 23077003356. Its totient is φ = 5663601888.

The previous prime is 13220243977. The next prime is 13220244017. The reversal of 13220244002 is 20044202231.

It can be written as a sum of positive squares in 2 ways, for example, as 11752511281 + 1467732721 = 108409^2 + 38311^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238868 + ... + 288960.

Almost surely, 2^13220244002 is an apocalyptic number.

13220244002 is a deficient number, since it is larger than the sum of its proper divisors (9856759354).

13220244002 is a wasteful number, since it uses less digits than its factorization.

13220244002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52802 (or 52795 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 13220244002 its reverse (20044202231), we get a palindrome (33264446233).

The spelling of 13220244002 in words is "thirteen billion, two hundred twenty million, two hundred forty-four thousand, two".