2222100021209 has 4 divisors (see below), whose sum is σ = 2244101011620. Its totient is φ = 2200099030800.

The previous prime is 2222100021191. The next prime is 2222100021259. The reversal of 2222100021209 is 9021200012222.

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 1319879299600 + 902220721609 = 1148860^2 + 949853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222100021209 - 2²⁴ = 2222083243993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222100021259) 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, 11000495054 + ... + 11000495255.

It is an arithmetic number, because the mean of its divisors is an integer number (561025252905).

Almost surely, 2^{2222100021209} is an apocalyptic number.

It is an amenable number.

2222100021209 is a deficient number, since it is larger than the sum of its proper divisors (22000990411).

2222100021209 is a wasteful number, since it uses less digits than its factorization.

2222100021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22000990410.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 2222100021209 in words is "two trillion, two hundred twenty-two billion, one hundred million, twenty-one thousand, two hundred nine".