2222109 has 12 divisors (see below), whose sum is σ = 3296956. Its totient is φ = 1441152.

The previous prime is 2222093. The next prime is 2222123. The reversal of 2222109 is 9012222.

It can be written as a sum of positive squares in 2 ways, for example, as 956484 + 1265625 = 978^2 + 1125^2 .

It is not a de Polignac number, because 2222109 - 2⁴ = 2222093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222091 and 2222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3004 + ... + 3669.

2^2222109 is an apocalyptic number.

It is an amenable number.

2222109 is a deficient number, since it is larger than the sum of its proper divisors (1074847).

2222109 is a wasteful number, since it uses less digits than its factorization.

2222109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2222109 is about 1490.6740086283. The cubic root of 2222109 is about 130.4933717513.

It can be divided in two parts, 2 and 222109, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 2222109 in words is "two million, two hundred twenty-two thousand, one hundred nine".