20100020099 has 2 divisors, whose sum is σ = 20100020100. Its totient is φ = 20100020098.

The previous prime is 20100020069. The next prime is 20100020117. The reversal of 20100020099 is 99002000102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100020099 - 2⁸ = 20100019843 is a prime.

It is a super-4 number, since 4×20100020099⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (20100020009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050010049 + 10050010050.

It is an arithmetic number, because the mean of its divisors is an integer number (10050010050).

Almost surely, 2^20100020099 is an apocalyptic number.

20100020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100020099 is an equidigital number, since it uses as much as digits as its factorization.

20100020099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 20100020099 in words is "twenty billion, one hundred million, twenty thousand, ninety-nine".