22212222212111 has 2 divisors, whose sum is σ = 22212222212112. Its totient is φ = 22212222212110.

The previous prime is 22212222212087. The next prime is 22212222212197. The reversal of 22212222212111 is 11121222221222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22212222212111 - 2³⁴ = 22195042342927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22212222211111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106111106055 + 11106111106056.

It is an arithmetic number, because the mean of its divisors is an integer number (11106111106056).

Almost surely, 2^{22212222212111} is an apocalyptic number.

22212222212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212222212111 is an equidigital number, since it uses as much as digits as its factorization.

22212222212111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 23.

Adding to 22212222212111 its reverse (11121222221222), we get a palindrome (33333444433333).

The spelling of 22212222212111 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".