20239207099 has 2 divisors, whose sum is σ = 20239207100. Its totient is φ = 20239207098.

The previous prime is 20239207067. The next prime is 20239207103. The reversal of 20239207099 is 99070293202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20239207099 - 2⁵ = 20239207067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20239207049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10119603549 + 10119603550.

It is an arithmetic number, because the mean of its divisors is an integer number (10119603550).

Almost surely, 2^20239207099 is an apocalyptic number.

20239207099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20239207099 is an equidigital number, since it uses as much as digits as its factorization.

20239207099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 20239207099 in words is "twenty billion, two hundred thirty-nine million, two hundred seven thousand, ninety-nine".