20101210099 has 2 divisors, whose sum is σ = 20101210100. Its totient is φ = 20101210098.

The previous prime is 20101210027. The next prime is 20101210121. The reversal of 20101210099 is 99001210102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20101210099 - 2⁹ = 20101209587 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101210399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050605049 + 10050605050.

It is an arithmetic number, because the mean of its divisors is an integer number (10050605050).

Almost surely, 2^20101210099 is an apocalyptic number.

20101210099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101210099 is an equidigital number, since it uses as much as digits as its factorization.

20101210099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20101210099 in words is "twenty billion, one hundred one million, two hundred ten thousand, ninety-nine".