222566426 has 4 divisors (see below), whose sum is σ = 333849642. Its totient is φ = 111283212.

The previous prime is 222566419. The next prime is 222566441. The reversal of 222566426 is 624665222.

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., 204461401 + 18105025 = 14299^2 + 4255^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55641605 + ... + 55641608.

Almost surely, 2^222566426 is an apocalyptic number.

222566426 is a deficient number, since it is larger than the sum of its proper divisors (111283216).

222566426 is a wasteful number, since it uses less digits than its factorization.

222566426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111283215.

The product of its digits is 69120, while the sum is 35.

The square root of 222566426 is about 14918.6603285952. The cubic root of 222566426 is about 606.0194328383.

It can be divided in two parts, 22256 and 6426, that added together give a palindrome (28682).

The spelling of 222566426 in words is "two hundred twenty-two million, five hundred sixty-six thousand, four hundred twenty-six".