13022320121 has 2 divisors, whose sum is σ = 13022320122. Its totient is φ = 13022320120.

The previous prime is 13022320097. The next prime is 13022320141. The reversal of 13022320121 is 12102322031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11827650025 + 1194670096 = 108755^2 + 34564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022320121 - 2²² = 13018125817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13022320121.

It is not a weakly prime, because it can be changed into another prime (13022320141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511160060 + 6511160061.

It is an arithmetic number, because the mean of its divisors is an integer number (6511160061).

Almost surely, 2^13022320121 is an apocalyptic number.

It is an amenable number.

13022320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13022320121 is an equidigital number, since it uses as much as digits as its factorization.

13022320121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13022320121 its reverse (12102322031), we get a palindrome (25124642152).

The spelling of 13022320121 in words is "thirteen billion, twenty-two million, three hundred twenty thousand, one hundred twenty-one".