13023122221013 has 4 divisors (see below), whose sum is σ = 13023136456140. Its totient is φ = 13023107985888.

The previous prime is 13023122221007. The next prime is 13023122221103. The reversal of 13023122221013 is 31012222132031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10592538325924 + 2430583895089 = 3254618^2 + 1559033^2 .

It is a cyclic number.

It is not a de Polignac number, because 13023122221013 - 2¹² = 13023122216917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13023122221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023122821013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5643518 + ... + 7608911.

It is an arithmetic number, because the mean of its divisors is an integer number (3255784114035).

Almost surely, 2^{13023122221013} is an apocalyptic number.

It is an amenable number.

13023122221013 is a deficient number, since it is larger than the sum of its proper divisors (14235127).

13023122221013 is an equidigital number, since it uses as much as digits as its factorization.

13023122221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14235126.

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

Adding to 13023122221013 its reverse (31012222132031), we get a palindrome (44035344353044).

The spelling of 13023122221013 in words is "thirteen trillion, twenty-three billion, one hundred twenty-two million, two hundred twenty-one thousand, thirteen".