12002211111 has 16 divisors (see below), whose sum is σ = 17564872320. Its totient is φ = 7229437920.

The previous prime is 12002211059. The next prime is 12002211163. The reversal of 12002211111 is 11111220021.

It is an interprime number because it is at equal distance from previous prime (12002211059) and next prime (12002211163).

It is not a de Polignac number, because 12002211111 - 2¹⁴ = 12002194727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002211911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110276 + ... + 1121033.

It is an arithmetic number, because the mean of its divisors is an integer number (1097804520).

Almost surely, 2^12002211111 is an apocalyptic number.

12002211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12002211111 is a deficient number, since it is larger than the sum of its proper divisors (5562661209).

12002211111 is a wasteful number, since it uses less digits than its factorization.

12002211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231486.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12002211111 its reverse (11111220021), we get a palindrome (23113431132).

The spelling of 12002211111 in words is "twelve billion, two million, two hundred eleven thousand, one hundred eleven".