111221011122 has 16 divisors (see below), whose sum is σ = 239552947200. Its totient is φ = 34221849552.

The previous prime is 111221011049. The next prime is 111221011127. The reversal of 111221011122 is 221110122111.

It is a happy number.

It is a super-2 number, since 2×111221011122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221011127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712955122 + ... + 712955277.

It is an arithmetic number, because the mean of its divisors is an integer number (14972059200).

Almost surely, 2^111221011122 is an apocalyptic number.

111221011122 is an abundant number, since it is smaller than the sum of its proper divisors (128331936078).

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

111221011122 is a wasteful number, since it uses less digits than its factorization.

111221011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425910417.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111221011122 its reverse (221110122111), we get a palindrome (332331133233).

The spelling of 111221011122 in words is "one hundred eleven billion, two hundred twenty-one million, eleven thousand, one hundred twenty-two".