111212220211102 has 16 divisors (see below), whose sum is σ = 166991079171312. Its totient is φ = 55548534415680.

The previous prime is 111212220211087. The next prime is 111212220211133. The reversal of 111212220211102 is 201112022212111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111212220211102.

It is a congruent number.

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, 28957348 + ... + 32572264.

It is an arithmetic number, because the mean of its divisors is an integer number (10436942448207).

Almost surely, 2^{111212220211102} is an apocalyptic number.

111212220211102 is a deficient number, since it is larger than the sum of its proper divisors (55778858960210).

111212220211102 is a wasteful number, since it uses less digits than its factorization.

111212220211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630843.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111212220211102 its reverse (201112022212111), we get a palindrome (312324242423213).

The spelling of 111212220211102 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twenty million, two hundred eleven thousand, one hundred two".