222221434 has 4 divisors (see below), whose sum is σ = 333332154. Its totient is φ = 111110716.

The previous prime is 222221429. The next prime is 222221437. The reversal of 222221434 is 434122222.

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., 208715809 + 13505625 = 14447^2 + 3675^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (222221437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555357 + ... + 55555360.

Almost surely, 2^222221434 is an apocalyptic number.

222221434 is a deficient number, since it is larger than the sum of its proper divisors (111110720).

222221434 is a wasteful number, since it uses less digits than its factorization.

222221434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111110719.

The product of its digits is 1536, while the sum is 22.

The square root of 222221434 is about 14907.0934121981. The cubic root of 222221434 is about 605.7061481291.

Adding to 222221434 its reverse (434122222), we get a palindrome (656343656).

The spelling of 222221434 in words is "two hundred twenty-two million, two hundred twenty-one thousand, four hundred thirty-four".