22772924281 has 2 divisors, whose sum is σ = 22772924282. Its totient is φ = 22772924280.

The previous prime is 22772924249. The next prime is 22772924287. The reversal of 22772924281 is 18242927722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17309349225 + 5463575056 = 131565^2 + 73916^2 .

It is a cyclic number.

It is not a de Polignac number, because 22772924281 - 2⁵ = 22772924249 is a prime.

It is a super-2 number, since 2×22772924281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22772924287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11386462140 + 11386462141.

It is an arithmetic number, because the mean of its divisors is an integer number (11386462141).

Almost surely, 2^22772924281 is an apocalyptic number.

It is an amenable number.

22772924281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22772924281 is an equidigital number, since it uses as much as digits as its factorization.

22772924281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The spelling of 22772924281 in words is "twenty-two billion, seven hundred seventy-two million, nine hundred twenty-four thousand, two hundred eighty-one".