2102019999 has 8 divisors (see below), whose sum is σ = 2803018752. Its totient is φ = 1401183960.

The previous prime is 2102019977. The next prime is 2102020003. The reversal of 2102019999 is 9999102012.

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

It is not a de Polignac number, because 2102019999 - 2⁹ = 2102019487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102019999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102019949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6409 + ... + 65154.

It is an arithmetic number, because the mean of its divisors is an integer number (350377344).

Almost surely, 2^2102019999 is an apocalyptic number.

2102019999 is a deficient number, since it is larger than the sum of its proper divisors (700998753).

2102019999 is an equidigital number, since it uses as much as digits as its factorization.

2102019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81357.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 2102019999 is about 45847.7916480172. The cubic root of 2102019999 is about 1280.9896316014.

The spelling of 2102019999 in words is "two billion, one hundred two million, nineteen thousand, nine hundred ninety-nine".