222042644 has 24 divisors (see below), whose sum is σ = 429323328. Its totient is φ = 99946880.

The previous prime is 222042643. The next prime is 222042671. The reversal of 222042644 is 446240222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222042641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69422 + ... + 72549.

It is an arithmetic number, because the mean of its divisors is an integer number (17888472).

Almost surely, 2^222042644 is an apocalyptic number.

It is an amenable number.

222042644 is a deficient number, since it is larger than the sum of its proper divisors (207280684).

222042644 is a wasteful number, since it uses less digits than its factorization.

222042644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142015 (or 142013 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 222042644 is about 14901.0953959768. The cubic root of 222042644 is about 605.5436626655.

Adding to 222042644 its reverse (446240222), we get a palindrome (668282866).

The spelling of 222042644 in words is "two hundred twenty-two million, forty-two thousand, six hundred forty-four".