121111111122 has 8 divisors (see below), whose sum is σ = 242222222256. Its totient is φ = 40370370372.

The previous prime is 121111111103. The next prime is 121111111129. The reversal of 121111111122 is 221111111121.

It is a sphenic number, since it is the product of 3 distinct primes.

121111111122 is an admirable number.

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

It is not an unprimeable number, because it can be changed into a prime (121111111129) 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, 10092592588 + ... + 10092592599.

It is an arithmetic number, because the mean of its divisors is an integer number (30277777782).

Almost surely, 2^121111111122 is an apocalyptic number.

121111111122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121111111122 is a wasteful number, since it uses less digits than its factorization.

121111111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20185185192.

The product of its digits is 8, while the sum is 15.

Adding to 121111111122 its reverse (221111111121), we get a palindrome (342222222243).

Subtracting 121111111122 from its reverse (221111111121), we obtain a palindrome (99999999999).

The spelling of 121111111122 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty-two".