12211139 has 2 divisors, whose sum is σ = 12211140. Its totient is φ = 12211138.

The previous prime is 12211127. The next prime is 12211141. The reversal of 12211139 is 93111221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12211139 - 2⁴ = 12211123 is a prime.

It is a super-2 number, since 2×12211139² = 298223831354642, which contains 22 as substring.

Together with 12211141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211139.

It is not a weakly prime, because it can be changed into another prime (12211159) by changing a digit.

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 as a sum of consecutive naturals, namely, 6105569 + 6105570.

It is an arithmetic number, because the mean of its divisors is an integer number (6105570).

Almost surely, 2^12211139 is an apocalyptic number.

12211139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211139 is an equidigital number, since it uses as much as digits as its factorization.

12211139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

The square root of 12211139 is about 3494.4440187246. Note that the first 3 decimals coincide. The cubic root of 12211139 is about 230.2777928924.

The spelling of 12211139 in words is "twelve million, two hundred eleven thousand, one hundred thirty-nine".