20000122859 has 2 divisors, whose sum is σ = 20000122860. Its totient is φ = 20000122858.

The previous prime is 20000122853. The next prime is 20000122907. The reversal of 20000122859 is 95822100002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000122859 - 2⁸ = 20000122603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000122853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000061429 + 10000061430.

It is an arithmetic number, because the mean of its divisors is an integer number (10000061430).

Almost surely, 2^20000122859 is an apocalyptic number.

20000122859 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000122859 is an equidigital number, since it uses as much as digits as its factorization.

20000122859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 20000122859 in words is "twenty billion, one hundred twenty-two thousand, eight hundred fifty-nine".