13010321021 has 2 divisors, whose sum is σ = 13010321022. Its totient is φ = 13010321020.

The previous prime is 13010320997. The next prime is 13010321033. The reversal of 13010321021 is 12012301031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11073352900 + 1936968121 = 105230^2 + 44011^2 .

It is a cyclic number.

It is not a de Polignac number, because 13010321021 - 2⁶ = 13010320957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13010320987 and 13010321005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13010323021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6505160510 + 6505160511.

It is an arithmetic number, because the mean of its divisors is an integer number (6505160511).

Almost surely, 2^13010321021 is an apocalyptic number.

It is an amenable number.

13010321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13010321021 is an equidigital number, since it uses as much as digits as its factorization.

13010321021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13010321021 its reverse (12012301031), we get a palindrome (25022622052).

The spelling of 13010321021 in words is "thirteen billion, ten million, three hundred twenty-one thousand, twenty-one".