22021242340393 has 2 divisors, whose sum is σ = 22021242340394. Its totient is φ = 22021242340392.

The previous prime is 22021242340387. The next prime is 22021242340439. The reversal of 22021242340393 is 39304324212022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21688645609449 + 332596730944 = 4657107^2 + 576712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021242340393 is a prime.

It is a super-2 number, since 2×22021242340393² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22021242346393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010621170196 + 11010621170197.

It is an arithmetic number, because the mean of its divisors is an integer number (11010621170197).

Almost surely, 2^{22021242340393} is an apocalyptic number.

It is an amenable number.

22021242340393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021242340393 is an equidigital number, since it uses as much as digits as its factorization.

22021242340393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 22021242340393 in words is "twenty-two trillion, twenty-one billion, two hundred forty-two million, three hundred forty thousand, three hundred ninety-three".