102020099999 has 8 divisors (see below), whose sum is σ = 102532014480. Its totient is φ = 101509252416.

The previous prime is 102020099989. The next prime is 102020100071. The reversal of 102020099999 is 999990020201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102020099999 - 2⁸ = 102020099743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020099939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74654 + ... + 457835.

It is an arithmetic number, because the mean of its divisors is an integer number (12816501810).

Almost surely, 2^102020099999 is an apocalyptic number.

102020099999 is a deficient number, since it is larger than the sum of its proper divisors (511914481).

102020099999 is an equidigital number, since it uses as much as digits as its factorization.

102020099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533449.

The product of its (nonzero) digits is 236196, while the sum is 50.

The spelling of 102020099999 in words is "one hundred two billion, twenty million, ninety-nine thousand, nine hundred ninety-nine".