13040021191 has 2 divisors, whose sum is σ = 13040021192. Its totient is φ = 13040021190.

The previous prime is 13040021147. The next prime is 13040021227. The reversal of 13040021191 is 19112004031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13040021191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13040081191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6520010595 + 6520010596.

It is an arithmetic number, because the mean of its divisors is an integer number (6520010596).

Almost surely, 2^13040021191 is an apocalyptic number.

13040021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040021191 is an equidigital number, since it uses as much as digits as its factorization.

13040021191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 13040021191 in words is "thirteen billion, forty million, twenty-one thousand, one hundred ninety-one".