13293960221 has 2 divisors, whose sum is σ = 13293960222. Its totient is φ = 13293960220.

The previous prime is 13293960217. The next prime is 13293960241. The reversal of 13293960221 is 12206939231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12457015321 + 836944900 = 111611^2 + 28930^2 .

It is a cyclic number.

It is not a de Polignac number, because 13293960221 - 2² = 13293960217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13293960241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646980110 + 6646980111.

It is an arithmetic number, because the mean of its divisors is an integer number (6646980111).

Almost surely, 2^13293960221 is an apocalyptic number.

It is an amenable number.

13293960221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293960221 is an equidigital number, since it uses as much as digits as its factorization.

13293960221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 13293960221 in words is "thirteen billion, two hundred ninety-three million, nine hundred sixty thousand, two hundred twenty-one".