13330340432921 has 2 divisors, whose sum is σ = 13330340432922. Its totient is φ = 13330340432920.

The previous prime is 13330340432867. The next prime is 13330340432953. The reversal of 13330340432921 is 12923404303331.

13330340432921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9817474891225 + 3512865541696 = 3133285^2 + 1874264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13330340432921 is a prime.

It is not a weakly prime, because it can be changed into another prime (13330340432971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665170216460 + 6665170216461.

It is an arithmetic number, because the mean of its divisors is an integer number (6665170216461).

Almost surely, 2^{13330340432921} is an apocalyptic number.

It is an amenable number.

13330340432921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13330340432921 is an equidigital number, since it uses as much as digits as its factorization.

13330340432921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 13330340432921 in words is "thirteen trillion, three hundred thirty billion, three hundred forty million, four hundred thirty-two thousand, nine hundred twenty-one".