13521222439 has 2 divisors, whose sum is σ = 13521222440. Its totient is φ = 13521222438.

The previous prime is 13521222431. The next prime is 13521222443. The reversal of 13521222439 is 93422212531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13521222439 - 2³ = 13521222431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13521222431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760611219 + 6760611220.

It is an arithmetic number, because the mean of its divisors is an integer number (6760611220).

Almost surely, 2^13521222439 is an apocalyptic number.

13521222439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521222439 is an equidigital number, since it uses as much as digits as its factorization.

13521222439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The spelling of 13521222439 in words is "thirteen billion, five hundred twenty-one million, two hundred twenty-two thousand, four hundred thirty-nine".