122215111 has 2 divisors, whose sum is σ = 122215112. Its totient is φ = 122215110.

The previous prime is 122215103. The next prime is 122215117. The reversal of 122215111 is 111512221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122215111 - 2³ = 122215103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122215117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61107555 + 61107556.

It is an arithmetic number, because the mean of its divisors is an integer number (61107556).

Almost surely, 2^122215111 is an apocalyptic number.

122215111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122215111 is an equidigital number, since it uses as much as digits as its factorization.

122215111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 16.

The square root of 122215111 is about 11055.0943460470. The cubic root of 122215111 is about 496.2588927127.

Adding to 122215111 its reverse (111512221), we get a palindrome (233727332).

The spelling of 122215111 in words is "one hundred twenty-two million, two hundred fifteen thousand, one hundred eleven".