210222101209 has 4 divisors (see below), whose sum is σ = 212584147380. Its totient is φ = 207860055040.

The previous prime is 210222101197. The next prime is 210222101227. The reversal of 210222101209 is 902101222012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106749225625 + 103472875584 = 326725^2 + 321672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210222101209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210222101209.

It is not an unprimeable number, because it can be changed into a prime (210222101239) 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, 1181022952 + ... + 1181023129.

It is an arithmetic number, because the mean of its divisors is an integer number (53146036845).

Almost surely, 2^210222101209 is an apocalyptic number.

It is an amenable number.

210222101209 is a deficient number, since it is larger than the sum of its proper divisors (2362046171).

210222101209 is an equidigital number, since it uses as much as digits as its factorization.

210222101209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362046170.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 210222101209 in words is "two hundred ten billion, two hundred twenty-two million, one hundred one thousand, two hundred nine".