12142129991 has 2 divisors, whose sum is σ = 12142129992. Its totient is φ = 12142129990.

The previous prime is 12142129969. The next prime is 12142130017. The reversal of 12142129991 is 19992124121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12142129991 - 2⁶ = 12142129927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12142129091) 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, 6071064995 + 6071064996.

It is an arithmetic number, because the mean of its divisors is an integer number (6071064996).

Almost surely, 2^12142129991 is an apocalyptic number.

12142129991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142129991 is an equidigital number, since it uses as much as digits as its factorization.

12142129991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 41.

The spelling of 12142129991 in words is "twelve billion, one hundred forty-two million, one hundred twenty-nine thousand, nine hundred ninety-one".