2100300209 has 4 divisors (see below), whose sum is σ = 2400343104. Its totient is φ = 1800257316.

The previous prime is 2100300193. The next prime is 2100300217. The reversal of 2100300209 is 9020030012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100300209 - 2⁴ = 2100300193 is a prime.

It is a super-2 number, since 2×2100300209² = 8822521935850887362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100300229) 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, 150021437 + ... + 150021450.

It is an arithmetic number, because the mean of its divisors is an integer number (600085776).

Almost surely, 2^2100300209 is an apocalyptic number.

It is an amenable number.

2100300209 is a deficient number, since it is larger than the sum of its proper divisors (300042895).

2100300209 is an equidigital number, since it uses as much as digits as its factorization.

2100300209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300042894.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2100300209 is about 45829.0323812319. The cubic root of 2100300209 is about 1280.6401845228.

The spelling of 2100300209 in words is "two billion, one hundred million, three hundred thousand, two hundred nine".