22112222291 has 2 divisors, whose sum is σ = 22112222292. Its totient is φ = 22112222290.

The previous prime is 22112222219. The next prime is 22112222357. The reversal of 22112222291 is 19222221122.

Together with previous prime (22112222219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22112222291 - 2¹⁰ = 22112221267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22112222291.

It is not a weakly prime, because it can be changed into another prime (22112222191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056111145 + 11056111146.

It is an arithmetic number, because the mean of its divisors is an integer number (11056111146).

Almost surely, 2^22112222291 is an apocalyptic number.

22112222291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112222291 is an equidigital number, since it uses as much as digits as its factorization.

22112222291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The spelling of 22112222291 in words is "twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred ninety-one".