2122211122111 has 2 divisors, whose sum is σ = 2122211122112. Its totient is φ = 2122211122110.

The previous prime is 2122211122099. The next prime is 2122211122159. The reversal of 2122211122111 is 1112211122212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122211122111 - 2⁹ = 2122211121599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122211122711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061105561055 + 1061105561056.

It is an arithmetic number, because the mean of its divisors is an integer number (1061105561056).

Almost surely, 2^{2122211122111} is an apocalyptic number.

2122211122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122211122111 is an equidigital number, since it uses as much as digits as its factorization.

2122211122111 is an evil number, because the sum of its binary digits is even.

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

Adding to 2122211122111 its reverse (1112211122212), we get a palindrome (3234422244323).

The spelling of 2122211122111 in words is "two trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".