13220122331 has 4 divisors (see below), whose sum is σ = 14237054832. Its totient is φ = 12203189832.

The previous prime is 13220122319. The next prime is 13220122339. The reversal of 13220122331 is 13322102231.

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

It is a cyclic number.

It is not a de Polignac number, because 13220122331 - 2¹⁰ = 13220121307 is a prime.

It is a super-2 number, since 2×13220122331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13220122339) 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, 508466231 + ... + 508466256.

It is an arithmetic number, because the mean of its divisors is an integer number (3559263708).

Almost surely, 2^13220122331 is an apocalyptic number.

13220122331 is a deficient number, since it is larger than the sum of its proper divisors (1016932501).

13220122331 is a wasteful number, since it uses less digits than its factorization.

13220122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016932500.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13220122331 its reverse (13322102231), we get a palindrome (26542224562).

The spelling of 13220122331 in words is "thirteen billion, two hundred twenty million, one hundred twenty-two thousand, three hundred thirty-one".