12111102 has 24 divisors (see below), whose sum is σ = 26306280. Its totient is φ = 4026960.

The previous prime is 12111097. The next prime is 12111103. The reversal of 12111102 is 20111121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111103) 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, 11352 + ... + 12372.

It is an arithmetic number, because the mean of its divisors is an integer number (1096095).

Almost surely, 2^12111102 is an apocalyptic number.

12111102 is an abundant number, since it is smaller than the sum of its proper divisors (14195178).

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

12111102 is a wasteful number, since it uses less digits than its factorization.

12111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 12111102 is about 3480.1008606073. The cubic root of 12111102 is about 229.6472348965.

Adding to 12111102 its reverse (20111121), we get a palindrome (32222223).

The spelling of 12111102 in words is "twelve million, one hundred eleven thousand, one hundred two".