111102221101212 has 36 divisors (see below), whose sum is σ = 306372791522616. Its totient is φ = 33667339727520.

The previous prime is 111102221101211. The next prime is 111102221101213. The reversal of 111102221101212 is 212101122201111.

It is a happy number.

111102221101212 is a `hidden beast` number, since 11 + 110 + 222 + 110 + 1 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (111102221101211) and next prime (111102221101213).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102221101211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140280581803 + ... + 140280582594.

Almost surely, 2^{111102221101212} is an apocalyptic number.

111102221101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111102221101212 is an abundant number, since it is smaller than the sum of its proper divisors (195270570421404).

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

111102221101212 is a wasteful number, since it uses less digits than its factorization.

111102221101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280561164418 (or 280561164413 counting only the distinct ones).

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

Adding to 111102221101212 its reverse (212101122201111), we get a palindrome (323203343302323).

The spelling of 111102221101212 in words is "one hundred eleven trillion, one hundred two billion, two hundred twenty-one million, one hundred one thousand, two hundred twelve".