12222012111 has 4 divisors (see below), whose sum is σ = 16296016152. Its totient is φ = 8148008072.

The previous prime is 12222012109. The next prime is 12222012169. The reversal of 12222012111 is 11121022221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12222012111 - 2¹ = 12222012109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222010111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037002016 + ... + 2037002021.

It is an arithmetic number, because the mean of its divisors is an integer number (4074004038).

Almost surely, 2^12222012111 is an apocalyptic number.

12222012111 is a deficient number, since it is larger than the sum of its proper divisors (4074004041).

12222012111 is an equidigital number, since it uses as much as digits as its factorization.

12222012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074004040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12222012111 its reverse (11121022221), we get a palindrome (23343034332).

The spelling of 12222012111 in words is "twelve billion, two hundred twenty-two million, twelve thousand, one hundred eleven".