121122111112 has 64 divisors (see below), whose sum is σ = 242879938560. Its totient is φ = 56486707200.

The previous prime is 121122111079. The next prime is 121122111157. The reversal of 121122111112 is 211111221121.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27027912 + ... + 27032392.

It is an arithmetic number, because the mean of its divisors is an integer number (3794999040).

Almost surely, 2^121122111112 is an apocalyptic number.

It is an amenable number.

121122111112 is an abundant number, since it is smaller than the sum of its proper divisors (121757827448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121122111112 is a wasteful number, since it uses less digits than its factorization.

121122111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134 (or 8130 counting only the distinct ones).

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

Adding to 121122111112 its reverse (211111221121), we get a palindrome (332233332233).

The spelling of 121122111112 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twelve".