13222065121 has 4 divisors (see below), whose sum is σ = 13222799044. Its totient is φ = 13221331200.

The previous prime is 13222065089. The next prime is 13222065133. The reversal of 13222065121 is 12156022231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12156022231 = 1277 ⋅9519203.

It can be written as a sum of positive squares in 2 ways, for example, as 6502164496 + 6719900625 = 80636^2 + 81975^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222065121 - 2⁵ = 13222065089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13222065421) 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, 339240 + ... + 376201.

It is an arithmetic number, because the mean of its divisors is an integer number (3305699761).

Almost surely, 2^13222065121 is an apocalyptic number.

It is an amenable number.

13222065121 is a deficient number, since it is larger than the sum of its proper divisors (733923).

13222065121 is an equidigital number, since it uses as much as digits as its factorization.

13222065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733922.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 13222065121 its reverse (12156022231), we get a palindrome (25378087352).

The spelling of 13222065121 in words is "thirteen billion, two hundred twenty-two million, sixty-five thousand, one hundred twenty-one".