222722643 has 48 divisors (see below), whose sum is σ = 355567520. Its totient is φ = 123171840.

The previous prime is 222722623. The next prime is 222722653. The reversal of 222722643 is 346227222.

It is a happy number.

It is not a de Polignac number, because 222722643 - 2⁵ = 222722611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222722643.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222722623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 514155 + ... + 514587.

Almost surely, 2^222722643 is an apocalyptic number.

222722643 is a deficient number, since it is larger than the sum of its proper divisors (132844877).

222722643 is a wasteful number, since it uses less digits than its factorization.

222722643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 569 counting only the distinct ones).

The product of its digits is 16128, while the sum is 30.

The square root of 222722643 is about 14923.8950344741. The cubic root of 222722643 is about 606.1611858701.

Adding to 222722643 its reverse (346227222), we get a palindrome (568949865).

The spelling of 222722643 in words is "two hundred twenty-two million, seven hundred twenty-two thousand, six hundred forty-three".