22102122211111 has 2 divisors, whose sum is σ = 22102122211112. Its totient is φ = 22102122211110.

The previous prime is 22102122211109. The next prime is 22102122211123. The reversal of 22102122211111 is 11111222120122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22102122211111 - 2¹ = 22102122211109 is a prime.

Together with 22102122211109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102122212111) 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, 11051061105555 + 11051061105556.

It is an arithmetic number, because the mean of its divisors is an integer number (11051061105556).

Almost surely, 2^{22102122211111} is an apocalyptic number.

22102122211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102122211111 is an equidigital number, since it uses as much as digits as its factorization.

22102122211111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22102122211111 its reverse (11111222120122), we get a palindrome (33213344331233).

The spelling of 22102122211111 in words is "twenty-two trillion, one hundred two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eleven".