12111139 has 2 divisors, whose sum is σ = 12111140. Its totient is φ = 12111138.

The previous prime is 12111103. The next prime is 12111149. The reversal of 12111139 is 93111121.

12111139 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93111121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12111139 - 2¹¹ = 12109091 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055569 + 6055570.

It is an arithmetic number, because the mean of its divisors is an integer number (6055570).

Almost surely, 2^12111139 is an apocalyptic number.

12111139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111139 is an equidigital number, since it uses as much as digits as its factorization.

12111139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 19.

The square root of 12111139 is about 3480.1061765412. The cubic root of 12111139 is about 229.6474687574.

The spelling of 12111139 in words is "twelve million, one hundred eleven thousand, one hundred thirty-nine".