13022321121 has 6 divisors (see below), whose sum is σ = 18810019410. Its totient is φ = 8681547408.

The previous prime is 13022321119. The next prime is 13022321129. The reversal of 13022321121 is 12112322031.

It can be written as a sum of positive squares in only one way, i.e., 11875550625 + 1146770496 = 108975^2 + 33864^2 .

It is not a de Polignac number, because 13022321121 - 2¹ = 13022321119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13022321094 and 13022321103.

It is not an unprimeable number, because it can be changed into a prime (13022321129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 723462276 + ... + 723462293.

It is an arithmetic number, because the mean of its divisors is an integer number (3135003235).

Almost surely, 2^13022321121 is an apocalyptic number.

It is an amenable number.

13022321121 is a deficient number, since it is larger than the sum of its proper divisors (5787698289).

13022321121 is a wasteful number, since it uses less digits than its factorization.

13022321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446924575 (or 1446924572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13022321121 its reverse (12112322031), we get a palindrome (25134643152).

The spelling of 13022321121 in words is "thirteen billion, twenty-two million, three hundred twenty-one thousand, one hundred twenty-one".