210001099 has 16 divisors (see below), whose sum is σ = 270268416. Its totient is φ = 158356800.

The previous prime is 210001081. The next prime is 210001111. The reversal of 210001099 is 990100012.

It is not a de Polignac number, because 210001099 - 2¹¹ = 209999051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210001009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41602 + ... + 46375.

It is an arithmetic number, because the mean of its divisors is an integer number (16891776).

Almost surely, 2^210001099 is an apocalyptic number.

210001099 is a deficient number, since it is larger than the sum of its proper divisors (60267317).

210001099 is a wasteful number, since it uses less digits than its factorization.

210001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88026.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 210001099 is about 14491.4146652423. The cubic root of 210001099 is about 594.3932321587.

It can be divided in two parts, 21000109 and 9, that multiplied together give a palindrome (189000981).

The spelling of 210001099 in words is "two hundred ten million, one thousand, ninety-nine".