20012131199 has 2 divisors, whose sum is σ = 20012131200. Its totient is φ = 20012131198.

The previous prime is 20012131171. The next prime is 20012131219. The reversal of 20012131199 is 99113121002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20012131199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012131109) 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, 10006065599 + 10006065600.

It is an arithmetic number, because the mean of its divisors is an integer number (10006065600).

Almost surely, 2^20012131199 is an apocalyptic number.

20012131199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012131199 is an equidigital number, since it uses as much as digits as its factorization.

20012131199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 20012131199 in words is "twenty billion, twelve million, one hundred thirty-one thousand, one hundred ninety-nine".