22021242340439 has 2 divisors, whose sum is σ = 22021242340440. Its totient is φ = 22021242340438.

The previous prime is 22021242340393. The next prime is 22021242340451. The reversal of 22021242340439 is 93404324212022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021242340439 - 2¹² = 22021242336343 is a prime.

It is a super-2 number, since 2×22021242340439² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021242340039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010621170219 + 11010621170220.

It is an arithmetic number, because the mean of its divisors is an integer number (11010621170220).

Almost surely, 2^{22021242340439} is an apocalyptic number.

22021242340439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021242340439 is an equidigital number, since it uses as much as digits as its factorization.

22021242340439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 22021242340439 in words is "twenty-two trillion, twenty-one billion, two hundred forty-two million, three hundred forty thousand, four hundred thirty-nine".