20330021099 has 2 divisors, whose sum is σ = 20330021100. Its totient is φ = 20330021098.

The previous prime is 20330021087. The next prime is 20330021137. The reversal of 20330021099 is 99012003302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20330021099 is a prime.

It is not a weakly prime, because it can be changed into another prime (20330021399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165010549 + 10165010550.

It is an arithmetic number, because the mean of its divisors is an integer number (10165010550).

Almost surely, 2^20330021099 is an apocalyptic number.

20330021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330021099 is an equidigital number, since it uses as much as digits as its factorization.

20330021099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 20330021099 in words is "twenty billion, three hundred thirty million, twenty-one thousand, ninety-nine".