12111112112211 has 96 divisors (see below), whose sum is σ = 20579010221952. Its totient is φ = 6720491980800.

The previous prime is 12111112112191. The next prime is 12111112112213. The reversal of 12111112112211 is 11221121111121.

12111112112211 is a `hidden beast` number, since 121 + 1 + 111 + 211 + 221 + 1 = 666.

It is not a de Polignac number, because 12111112112211 - 2⁵ = 12111112112179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111112112213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1515210831 + ... + 1515218823.

It is an arithmetic number, because the mean of its divisors is an integer number (214364689812).

Almost surely, 2^{12111112112211} is an apocalyptic number.

12111112112211 is a deficient number, since it is larger than the sum of its proper divisors (8467898109741).

12111112112211 is a wasteful number, since it uses less digits than its factorization.

12111112112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12653 (or 12650 counting only the distinct ones).

The product of its digits is 16, while the sum is 18.

Adding to 12111112112211 its reverse (11221121111121), we get a palindrome (23332233223332).

The spelling of 12111112112211 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred twelve thousand, two hundred eleven".