2109222 has 24 divisors (see below), whose sum is σ = 4694976. Its totient is φ = 683856.

The previous prime is 2109203. The next prime is 2109223. The reversal of 2109222 is 2229012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2109195 and 2109204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109223) 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, 918 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (195624).

2^2109222 is an apocalyptic number.

2109222 is an abundant number, since it is smaller than the sum of its proper divisors (2585754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2109222 is a wasteful number, since it uses less digits than its factorization.

2109222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3209 counting only the distinct ones).

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

The square root of 2109222 is about 1452.3160812991. The cubic root of 2109222 is about 128.2450951694.

The spelling of 2109222 in words is "two million, one hundred nine thousand, two hundred twenty-two".