22112223281 has 2 divisors, whose sum is σ = 22112223282. Its totient is φ = 22112223280.

The previous prime is 22112223269. The next prime is 22112223349. The reversal of 22112223281 is 18232221122.

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., 16257525025 + 5854698256 = 127505^2 + 76516^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112223281 - 2²⁶ = 22045114417 is a prime.

It is a super-2 number, since 2×22112223281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22112223281.

It is not a weakly prime, because it can be changed into another prime (22112223181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056111640 + 11056111641.

It is an arithmetic number, because the mean of its divisors is an integer number (11056111641).

Almost surely, 2^22112223281 is an apocalyptic number.

It is an amenable number.

22112223281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112223281 is an equidigital number, since it uses as much as digits as its factorization.

22112223281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The spelling of 22112223281 in words is "twenty-two billion, one hundred twelve million, two hundred twenty-three thousand, two hundred eighty-one".