13210023121 has 2 divisors, whose sum is σ = 13210023122. Its totient is φ = 13210023120.

The previous prime is 13210023097. The next prime is 13210023187. The reversal of 13210023121 is 12132001231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12205830400 + 1004192721 = 110480^2 + 31689^2 .

It is a cyclic number.

It is not a de Polignac number, because 13210023121 - 2⁵ = 13210023089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13210023095 and 13210023104.

It is not a weakly prime, because it can be changed into another prime (13210027121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605011560 + 6605011561.

It is an arithmetic number, because the mean of its divisors is an integer number (6605011561).

Almost surely, 2^13210023121 is an apocalyptic number.

It is an amenable number.

13210023121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13210023121 is an equidigital number, since it uses as much as digits as its factorization.

13210023121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13210023121 its reverse (12132001231), we get a palindrome (25342024352).

The spelling of 13210023121 in words is "thirteen billion, two hundred ten million, twenty-three thousand, one hundred twenty-one".