2101000019999 has 8 divisors (see below), whose sum is σ = 2238224499840. Its totient is φ = 1966440093336.

The previous prime is 2101000019971. The next prime is 2101000020017. The reversal of 2101000019999 is 9999100001012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101000019999 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 (2101000049999) 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, 666136667 + ... + 666139820.

It is an arithmetic number, because the mean of its divisors is an integer number (279778062480).

Almost surely, 2^{2101000019999} is an apocalyptic number.

2101000019999 is a deficient number, since it is larger than the sum of its proper divisors (137224479841).

2101000019999 is a wasteful number, since it uses less digits than its factorization.

2101000019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332276589.

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 2101000019999 in words is "two trillion, one hundred one billion, nineteen thousand, nine hundred ninety-nine".