122211220111 has 2 divisors, whose sum is σ = 122211220112. Its totient is φ = 122211220110.

The previous prime is 122211220099. The next prime is 122211220133. The reversal of 122211220111 is 111022112221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122211220111 - 2²³ = 122202831503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122211220171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105610055 + 61105610056.

It is an arithmetic number, because the mean of its divisors is an integer number (61105610056).

Almost surely, 2^122211220111 is an apocalyptic number.

122211220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122211220111 is an equidigital number, since it uses as much as digits as its factorization.

122211220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122211220111 its reverse (111022112221), we get a palindrome (233233332332).

The spelling of 122211220111 in words is "one hundred twenty-two billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".