222520242 has 32 divisors (see below), whose sum is σ = 538538112. Its totient is φ = 59837184.

The previous prime is 222520223. The next prime is 222520289. The reversal of 222520242 is 242025222.

222520242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155113 + ... + 156540.

It is an arithmetic number, because the mean of its divisors is an integer number (16829316).

Almost surely, 2^222520242 is an apocalyptic number.

222520242 is an abundant number, since it is smaller than the sum of its proper divisors (316017870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222520242 is a wasteful number, since it uses less digits than its factorization.

222520242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311682.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222520242 is about 14917.1123881266. The cubic root of 222520242 is about 605.9775122634.

Adding to 222520242 its reverse (242025222), we get a palindrome (464545464).

The spelling of 222520242 in words is "two hundred twenty-two million, five hundred twenty thousand, two hundred forty-two".