20012999 has 2 divisors, whose sum is σ = 20013000. Its totient is φ = 20012998.

The previous prime is 20012981. The next prime is 20013031. The reversal of 20012999 is 99921002.

It is an a-pointer prime, because the next prime (20013031) can be obtained adding 20012999 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012999 - 2⁸ = 20012743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006499 + 10006500.

It is an arithmetic number, because the mean of its divisors is an integer number (10006500).

Almost surely, 2^20012999 is an apocalyptic number.

20012999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012999 is an equidigital number, since it uses as much as digits as its factorization.

20012999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 20012999 is about 4473.5890513099. The cubic root of 20012999 is about 271.5005567810.

The spelling of 20012999 in words is "twenty million, twelve thousand, nine hundred ninety-nine".