111111212102022 has 72 divisors (see below), whose sum is σ = 267804242210232. Its totient is φ = 33264400794240.

The previous prime is 111111212101987. The next prime is 111111212102047. The reversal of 111111212102022 is 220201212111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111111212101986 and 111111212102004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 307140003 + ... + 307501550.

It is an arithmetic number, because the mean of its divisors is an integer number (3719503364031).

Almost surely, 2^{111111212102022} is an apocalyptic number.

111111212102022 is an abundant number, since it is smaller than the sum of its proper divisors (156693030108210).

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

111111212102022 is a wasteful number, since it uses less digits than its factorization.

111111212102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614641666 (or 614641652 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111111212102022 its reverse (220201212111111), we get a palindrome (331312424213133).

The spelling of 111111212102022 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twelve million, one hundred two thousand, twenty-two".