2222144 has 14 divisors (see below), whose sum is σ = 4409694. Its totient is φ = 1111040.

The previous prime is 2222141. The next prime is 2222147. The reversal of 2222144 is 4412222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2222141) and next prime (2222147).

It can be written as a sum of positive squares in only one way, i.e., 1960000 + 262144 = 1400^2 + 512^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17297 + ... + 17424.

2^2222144 is an apocalyptic number.

It is an amenable number.

2222144 is a deficient number, since it is larger than the sum of its proper divisors (2187550).

2222144 is an equidigital number, since it uses as much as digits as its factorization.

2222144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34733 (or 34723 counting only the distinct ones).

The product of its digits is 256, while the sum is 17.

The square root of 2222144 is about 1490.6857482380. The cubic root of 2222144 is about 130.4940568728.

Adding to 2222144 its reverse (4412222), we get a palindrome (6634366).

The spelling of 2222144 in words is "two million, two hundred twenty-two thousand, one hundred forty-four".