102021119999 has 4 divisors (see below), whose sum is σ = 103031230200. Its totient is φ = 101011009800.

The previous prime is 102021119971. The next prime is 102021120023. The reversal of 102021119999 is 999911120201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021119999 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 (102021119929) 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, 505054949 + ... + 505055150.

It is an arithmetic number, because the mean of its divisors is an integer number (25757807550).

Almost surely, 2^102021119999 is an apocalyptic number.

102021119999 is a deficient number, since it is larger than the sum of its proper divisors (1010110201).

102021119999 is a wasteful number, since it uses less digits than its factorization.

102021119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010110200.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 102021119999 in words is "one hundred two billion, twenty-one million, one hundred nineteen thousand, nine hundred ninety-nine".