22221222212291 has 2 divisors, whose sum is σ = 22221222212292. Its totient is φ = 22221222212290.

The previous prime is 22221222212269. The next prime is 22221222212311. The reversal of 22221222212291 is 19221222212222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221222212291 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221222212201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110611106145 + 11110611106146.

It is an arithmetic number, because the mean of its divisors is an integer number (11110611106146).

Almost surely, 2^{22221222212291} is an apocalyptic number.

22221222212291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221222212291 is an equidigital number, since it uses as much as digits as its factorization.

22221222212291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The spelling of 22221222212291 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred ninety-one".