22421002431391 has 2 divisors, whose sum is σ = 22421002431392. Its totient is φ = 22421002431390.

The previous prime is 22421002431379. The next prime is 22421002431413. The reversal of 22421002431391 is 19313420012422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22421002431391 is a prime.

It is a super-2 number, since 2×22421002431391² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22421002431691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210501215695 + 11210501215696.

It is an arithmetic number, because the mean of its divisors is an integer number (11210501215696).

Almost surely, 2^{22421002431391} is an apocalyptic number.

22421002431391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421002431391 is an equidigital number, since it uses as much as digits as its factorization.

22421002431391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 22421002431391 in words is "twenty-two trillion, four hundred twenty-one billion, two million, four hundred thirty-one thousand, three hundred ninety-one".