2221044 has 48 divisors (see below), whose sum is σ = 5996928. Its totient is φ = 626688.

The previous prime is 2221031. The next prime is 2221061. The reversal of 2221044 is 4401222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11412 + ... + 11604.

It is an arithmetic number, because the mean of its divisors is an integer number (124936).

2^2221044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2998464).

2221044 is an abundant number, since it is smaller than the sum of its proper divisors (3775884).

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

2221044 is a wasteful number, since it uses less digits than its factorization.

2221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2221044 is about 1490.3167448566. The cubic root of 2221044 is about 130.4725210415.

Adding to 2221044 its reverse (4401222), we get a palindrome (6622266).

The spelling of 2221044 in words is "two million, two hundred twenty-one thousand, forty-four".