2222021209 has 8 divisors (see below), whose sum is σ = 2347551360. Its totient is φ = 2099751696.

The previous prime is 2222021203. The next prime is 2222021213. The reversal of 2222021209 is 9021202222.

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

It is a de Polignac number, because none of the positive numbers 2^k-2222021209 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 2222021209.

It is not an unprimeable number, because it can be changed into a prime (2222021203) 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, 813759 + ... + 816484.

It is an arithmetic number, because the mean of its divisors is an integer number (293443920).

Almost surely, 2^2222021209 is an apocalyptic number.

2222021209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2222021209 is a deficient number, since it is larger than the sum of its proper divisors (125530151).

2222021209 is a wasteful number, since it uses less digits than its factorization.

2222021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630319.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2222021209 is about 47138.3199636983. The cubic root of 2222021209 is about 1304.9165321952.

The spelling of 2222021209 in words is "two billion, two hundred twenty-two million, twenty-one thousand, two hundred nine".