13020394922 has 4 divisors (see below), whose sum is σ = 19530592386. Its totient is φ = 6510197460.

The previous prime is 13020394873. The next prime is 13020394939. The reversal of 13020394922 is 22949302031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9533374321 + 3487020601 = 97639^2 + 59051^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255098729 + ... + 3255098732.

Almost surely, 2^13020394922 is an apocalyptic number.

13020394922 is a deficient number, since it is larger than the sum of its proper divisors (6510197464).

13020394922 is an equidigital number, since it uses as much as digits as its factorization.

13020394922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510197463.

The product of its (nonzero) digits is 23328, while the sum is 35.

Adding to 13020394922 its reverse (22949302031), we get a palindrome (35969696953).

The spelling of 13020394922 in words is "thirteen billion, twenty million, three hundred ninety-four thousand, nine hundred twenty-two".