2221144 has 8 divisors (see below), whose sum is σ = 4164660. Its totient is φ = 1110568.

The previous prime is 2221129. The next prime is 2221159. The reversal of 2221144 is 4411222.

It is an interprime number because it is at equal distance from previous prime (2221129) and next prime (2221159).

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138814 + ... + 138829.

2^2221144 is an apocalyptic number.

It is an amenable number.

2221144 is a deficient number, since it is larger than the sum of its proper divisors (1943516).

2221144 is a wasteful number, since it uses less digits than its factorization.

2221144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277649 (or 277645 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 2221144 is about 1490.3502943939. The cubic root of 2221144 is about 130.4744791381.

Adding to 2221144 its reverse (4411222), we get a palindrome (6632366).

The spelling of 2221144 in words is "two million, two hundred twenty-one thousand, one hundred forty-four".