22245442481 has 2 divisors, whose sum is σ = 22245442482. Its totient is φ = 22245442480.

The previous prime is 22245442451. The next prime is 22245442487. The reversal of 22245442481 is 18424454222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22196232256 + 49210225 = 148984^2 + 7015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245442481 is a prime.

It is a super-2 number, since 2×22245442481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22245442487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122721240 + 11122721241.

It is an arithmetic number, because the mean of its divisors is an integer number (11122721241).

Almost surely, 2^22245442481 is an apocalyptic number.

It is an amenable number.

22245442481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245442481 is an equidigital number, since it uses as much as digits as its factorization.

22245442481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163840, while the sum is 38.

The spelling of 22245442481 in words is "twenty-two billion, two hundred forty-five million, four hundred forty-two thousand, four hundred eighty-one".