2012112139 has 2 divisors, whose sum is σ = 2012112140. Its totient is φ = 2012112138.

The previous prime is 2012112127. The next prime is 2012112149. The reversal of 2012112139 is 9312112102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012112139 - 2¹⁵ = 2012079371 is a prime.

It is a super-2 number, since 2×2012112139² = 8097190519822310642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2012112119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006056069 + 1006056070.

It is an arithmetic number, because the mean of its divisors is an integer number (1006056070).

Almost surely, 2^2012112139 is an apocalyptic number.

2012112139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012112139 is an equidigital number, since it uses as much as digits as its factorization.

2012112139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2012112139 is about 44856.5729743145. The cubic root of 2012112139 is about 1262.4593225988.

The spelling of 2012112139 in words is "two billion, twelve million, one hundred twelve thousand, one hundred thirty-nine".