122102111111 has 4 divisors (see below), whose sum is σ = 125080211424. Its totient is φ = 119124010800.

The previous prime is 122102111039. The next prime is 122102111161. The reversal of 122102111111 is 111111201221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122102111111 - 2²² = 122097916807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102111161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489050095 + ... + 1489050176.

It is an arithmetic number, because the mean of its divisors is an integer number (31270052856).

Almost surely, 2^122102111111 is an apocalyptic number.

122102111111 is a deficient number, since it is larger than the sum of its proper divisors (2978100313).

122102111111 is an equidigital number, since it uses as much as digits as its factorization.

122102111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978100312.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 122102111111 its reverse (111111201221), we get a palindrome (233213312332).

The spelling of 122102111111 in words is "one hundred twenty-two billion, one hundred two million, one hundred eleven thousand, one hundred eleven".