10099920091 has 2 divisors, whose sum is σ = 10099920092. Its totient is φ = 10099920090.

The previous prime is 10099920071. The next prime is 10099920097. The reversal of 10099920091 is 19002999001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10099920091 - 2⁵ = 10099920059 is a prime.

It is not a weakly prime, because it can be changed into another prime (10099920097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049960045 + 5049960046.

It is an arithmetic number, because the mean of its divisors is an integer number (5049960046).

Almost surely, 2^10099920091 is an apocalyptic number.

10099920091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10099920091 is an equidigital number, since it uses as much as digits as its factorization.

10099920091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 40.

The spelling of 10099920091 in words is "ten billion, ninety-nine million, nine hundred twenty thousand, ninety-one".