111212011122 has 16 divisors (see below), whose sum is σ = 222548790720. Its totient is φ = 37049875632.

The previous prime is 111212011109. The next prime is 111212011189. The reversal of 111212011122 is 221110212111.

It is a happy number.

It is a super-2 number, since 2×111212011122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5187097 + ... + 5208492.

It is an arithmetic number, because the mean of its divisors is an integer number (13909299420).

Almost surely, 2^111212011122 is an apocalyptic number.

111212011122 is an abundant number, since it is smaller than the sum of its proper divisors (111336779598).

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

111212011122 is a wasteful number, since it uses less digits than its factorization.

111212011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10397377.

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

Adding to 111212011122 its reverse (221110212111), we get a palindrome (332322223233).

The spelling of 111212011122 in words is "one hundred eleven billion, two hundred twelve million, eleven thousand, one hundred twenty-two".