13401221023397 has 2 divisors, whose sum is σ = 13401221023398. Its totient is φ = 13401221023396.

The previous prime is 13401221023291. The next prime is 13401221023427. The reversal of 13401221023397 is 79332012210431.

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., 10902880406401 + 2498340616996 = 3301951^2 + 1580614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13401221023397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13401221023397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13401221023097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700610511698 + 6700610511699.

It is an arithmetic number, because the mean of its divisors is an integer number (6700610511699).

Almost surely, 2^{13401221023397} is an apocalyptic number.

It is an amenable number.

13401221023397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13401221023397 is an equidigital number, since it uses as much as digits as its factorization.

13401221023397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 13401221023397 in words is "thirteen trillion, four hundred one billion, two hundred twenty-one million, twenty-three thousand, three hundred ninety-seven".