13013311021 has 2 divisors, whose sum is σ = 13013311022. Its totient is φ = 13013311020.

The previous prime is 13013311001. The next prime is 13013311043. The reversal of 13013311021 is 12011331031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11111478921 + 1901832100 = 105411^2 + 43610^2 .

It is a cyclic number.

It is not a de Polignac number, because 13013311021 - 2¹³ = 13013302829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13013310986 and 13013311004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13013311001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6506655510 + 6506655511.

It is an arithmetic number, because the mean of its divisors is an integer number (6506655511).

Almost surely, 2^13013311021 is an apocalyptic number.

It is an amenable number.

13013311021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13013311021 is an equidigital number, since it uses as much as digits as its factorization.

13013311021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13013311021 its reverse (12011331031), we get a palindrome (25024642052).

The spelling of 13013311021 in words is "thirteen billion, thirteen million, three hundred eleven thousand, twenty-one".