13001300021 has 2 divisors, whose sum is σ = 13001300022. Its totient is φ = 13001300020.

The previous prime is 13001300017. The next prime is 13001300029. The reversal of 13001300021 is 12000310031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7630022500 + 5371277521 = 87350^2 + 73289^2 .

It is a cyclic number.

It is not a de Polignac number, because 13001300021 - 2² = 13001300017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13001299975 and 13001300011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13001300029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6500650010 + 6500650011.

It is an arithmetic number, because the mean of its divisors is an integer number (6500650011).

Almost surely, 2^13001300021 is an apocalyptic number.

It is an amenable number.

13001300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13001300021 is an equidigital number, since it uses as much as digits as its factorization.

13001300021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 13001300021 its reverse (12000310031), we get a palindrome (25001610052).

The spelling of 13001300021 in words is "thirteen billion, one million, three hundred thousand, twenty-one".