13372001521 has 2 divisors, whose sum is σ = 13372001522. Its totient is φ = 13372001520.

The previous prime is 13372001473. The next prime is 13372001527. The reversal of 13372001521 is 12510027331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8767700496 + 4604301025 = 93636^2 + 67855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13372001521 is a prime.

It is not a weakly prime, because it can be changed into another prime (13372001527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6686000760 + 6686000761.

It is an arithmetic number, because the mean of its divisors is an integer number (6686000761).

Almost surely, 2^13372001521 is an apocalyptic number.

It is an amenable number.

13372001521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13372001521 is an equidigital number, since it uses as much as digits as its factorization.

13372001521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 13372001521 its reverse (12510027331), we get a palindrome (25882028852).

The spelling of 13372001521 in words is "thirteen billion, three hundred seventy-two million, one thousand, five hundred twenty-one".