23222222281 has 2 divisors, whose sum is σ = 23222222282. Its totient is φ = 23222222280.

The previous prime is 23222222279. The next prime is 23222222341. The reversal of 23222222281 is 18222222232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19048416256 + 4173806025 = 138016^2 + 64605^2 .

It is a cyclic number.

It is not a de Polignac number, because 23222222281 - 2¹ = 23222222279 is a prime.

It is a super-2 number, since 2×23222222281² (a number of 22 digits) contains 22 as substring.

Together with 23222222279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23222226281) 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, 11611111140 + 11611111141.

It is an arithmetic number, because the mean of its divisors is an integer number (11611111141).

Almost surely, 2^23222222281 is an apocalyptic number.

It is an amenable number.

23222222281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222222281 is an equidigital number, since it uses as much as digits as its factorization.

23222222281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 28.

The spelling of 23222222281 in words is "twenty-three billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eighty-one".