222688226 has 4 divisors (see below), whose sum is σ = 334032342. Its totient is φ = 111344112.

The previous prime is 222688217. The next prime is 222688229. The reversal of 222688226 is 622886222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147015625 + 75672601 = 12125^2 + 8699^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222688226.

It is not an unprimeable number, because it can be changed into a prime (222688229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672055 + ... + 55672058.

Almost surely, 2^222688226 is an apocalyptic number.

222688226 is a deficient number, since it is larger than the sum of its proper divisors (111344116).

222688226 is a wasteful number, since it uses less digits than its factorization.

222688226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111344115.

The product of its digits is 73728, while the sum is 38.

The square root of 222688226 is about 14922.7419062316. The cubic root of 222688226 is about 606.1299611984.

The spelling of 222688226 in words is "two hundred twenty-two million, six hundred eighty-eight thousand, two hundred twenty-six".