102020101999 has 8 divisors (see below), whose sum is σ = 102151400000. Its totient is φ = 101888865792.

The previous prime is 102020101991. The next prime is 102020102017. The reversal of 102020101999 is 999101020201.

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 102020101999 - 2³ = 102020101991 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 (102020101991) 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, 3911002 + ... + 3937000.

It is an arithmetic number, because the mean of its divisors is an integer number (12768925000).

Almost surely, 2^102020101999 is an apocalyptic number.

102020101999 is a deficient number, since it is larger than the sum of its proper divisors (131298001).

102020101999 is a wasteful number, since it uses less digits than its factorization.

102020101999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30897.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 102020101999 in words is "one hundred two billion, twenty million, one hundred one thousand, nine hundred ninety-nine".