102120010999 has 4 divisors (see below), whose sum is σ = 107494748440. Its totient is φ = 96745273560.

The previous prime is 102120010963. The next prime is 102120011003. The reversal of 102120010999 is 999010021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102120010999 - 2²⁵ = 102086456567 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 (102120010199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2687368692 + ... + 2687368729.

It is an arithmetic number, because the mean of its divisors is an integer number (26873687110).

Almost surely, 2^102120010999 is an apocalyptic number.

102120010999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

102120010999 is a deficient number, since it is larger than the sum of its proper divisors (5374737441).

102120010999 is an equidigital number, since it uses as much as digits as its factorization.

102120010999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374737440.

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

The spelling of 102120010999 in words is "one hundred two billion, one hundred twenty million, ten thousand, nine hundred ninety-nine".