210099999999 has 8 divisors (see below), whose sum is σ = 280135608192. Its totient is φ = 140065529240.

The previous prime is 210099999997. The next prime is 210100000001. The reversal of 210099999999 is 999999990012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (210099999997) and next prime (210100000001).

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 210099999999 - 2¹ = 210099999997 is a prime.

210099999999 is a modest number, since divided by 999999 gives 210099 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 210099999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210099999997) 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, 346732 + ... + 735134.

It is an arithmetic number, because the mean of its divisors is an integer number (35016951024).

Almost surely, 2^210099999999 is an apocalyptic number.

210099999999 is a deficient number, since it is larger than the sum of its proper divisors (70035608193).

210099999999 is a wasteful number, since it uses less digits than its factorization.

210099999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568717.

The product of its (nonzero) digits is 86093442, while the sum is 75.

The spelling of 210099999999 in words is "two hundred ten billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".