121102222111 has 16 divisors (see below), whose sum is σ = 134479499616. Its totient is φ = 108356017536.

The previous prime is 121102222103. The next prime is 121102222123. The reversal of 121102222111 is 111222201121.

It is not a de Polignac number, because 121102222111 - 2³ = 121102222103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102222181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001640 + ... + 1116013.

It is an arithmetic number, because the mean of its divisors is an integer number (8404968726).

Almost surely, 2^121102222111 is an apocalyptic number.

121102222111 is a deficient number, since it is larger than the sum of its proper divisors (13377277505).

121102222111 is a wasteful number, since it uses less digits than its factorization.

121102222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117802.

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

Adding to 121102222111 its reverse (111222201121), we get a palindrome (232324423232).

The spelling of 121102222111 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty-two thousand, one hundred eleven".