22254444242081 has 2 divisors, whose sum is σ = 22254444242082. Its totient is φ = 22254444242080.

The previous prime is 22254444242053. The next prime is 22254444242203. The reversal of 22254444242081 is 18024244445222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14631963780625 + 7622480461456 = 3825175^2 + 2760884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22254444242081 is a prime.

It is a super-2 number, since 2×22254444242081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22254444242981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11127222121040 + 11127222121041.

It is an arithmetic number, because the mean of its divisors is an integer number (11127222121041).

Almost surely, 2^{22254444242081} is an apocalyptic number.

It is an amenable number.

22254444242081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22254444242081 is an equidigital number, since it uses as much as digits as its factorization.

22254444242081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1310720, while the sum is 44.

The spelling of 22254444242081 in words is "twenty-two trillion, two hundred fifty-four billion, four hundred forty-four million, two hundred forty-two thousand, eighty-one".