2215222144 has 16 divisors (see below), whose sum is σ = 4413138120. Its totient is φ = 1107611008.

The previous prime is 2215222129. The next prime is 2215222147. The reversal of 2215222144 is 4412225122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215222147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8653084 + ... + 8653339.

Almost surely, 2^2215222144 is an apocalyptic number.

It is an amenable number.

2215222144 is a deficient number, since it is larger than the sum of its proper divisors (2197915976).

2215222144 is an equidigital number, since it uses as much as digits as its factorization.

2215222144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17306437 (or 17306425 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 2215222144 is about 47066.1464749346. The cubic root of 2215222144 is about 1303.5842201346.

Adding to 2215222144 its reverse (4412225122), we get a palindrome (6627447266).

The spelling of 2215222144 in words is "two billion, two hundred fifteen million, two hundred twenty-two thousand, one hundred forty-four".