22142635568861 has 2 divisors, whose sum is σ = 22142635568862. Its totient is φ = 22142635568860.

The previous prime is 22142635568843. The next prime is 22142635568917. The reversal of 22142635568861 is 16886553624122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21839788969636 + 302846599225 = 4673306^2 + 550315^2 .

It is a cyclic number.

It is not a de Polignac number, because 22142635568861 - 2⁶ = 22142635568797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22142635568861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22142635568161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071317784430 + 11071317784431.

It is an arithmetic number, because the mean of its divisors is an integer number (11071317784431).

Almost surely, 2^{22142635568861} is an apocalyptic number.

It is an amenable number.

22142635568861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22142635568861 is an equidigital number, since it uses as much as digits as its factorization.

22142635568861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33177600, while the sum is 59.

The spelling of 22142635568861 in words is "twenty-two trillion, one hundred forty-two billion, six hundred thirty-five million, five hundred sixty-eight thousand, eight hundred sixty-one".