200123021999 has 2 divisors, whose sum is σ = 200123022000. Its totient is φ = 200123021998.

The previous prime is 200123021971. The next prime is 200123022017. The reversal of 200123021999 is 999120321002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200123021999 - 2¹² = 200123017903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200123021909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061510999 + 100061511000.

It is an arithmetic number, because the mean of its divisors is an integer number (100061511000).

Almost surely, 2^200123021999 is an apocalyptic number.

200123021999 is a deficient number, since it is larger than the sum of its proper divisors (1).

200123021999 is an equidigital number, since it uses as much as digits as its factorization.

200123021999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 200123021999 in words is "two hundred billion, one hundred twenty-three million, twenty-one thousand, nine hundred ninety-nine".