111212102 has 8 divisors (see below), whose sum is σ = 166900176. Its totient is φ = 55578712.

The previous prime is 111212099. The next prime is 111212117. The reversal of 111212102 is 201212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8138 + ... + 16989.

It is an arithmetic number, because the mean of its divisors is an integer number (20862522).

Almost surely, 2^111212102 is an apocalyptic number.

111212102 is a deficient number, since it is larger than the sum of its proper divisors (55688074).

111212102 is a wasteful number, since it uses less digits than its factorization.

111212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27342.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 111212102 is about 10545.7148643418. The cubic root of 111212102 is about 480.8954667283.

Adding to 111212102 its reverse (201212111), we get a palindrome (312424213).

Subtracting 111212102 from its reverse (201212111), we obtain a palindrome (90000009).

The spelling of 111212102 in words is "one hundred eleven million, two hundred twelve thousand, one hundred two".