222134645 has 4 divisors (see below), whose sum is σ = 266561580. Its totient is φ = 177707712.

The previous prime is 222134617. The next prime is 222134651. The reversal of 222134645 is 546431222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50367409 + 171767236 = 7097^2 + 13106^2 .

It is a cyclic number.

It is not a de Polignac number, because 222134645 - 2⁶ = 222134581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22213460 + ... + 22213469.

It is an arithmetic number, because the mean of its divisors is an integer number (66640395).

Almost surely, 2^222134645 is an apocalyptic number.

It is an amenable number.

222134645 is a deficient number, since it is larger than the sum of its proper divisors (44426935).

222134645 is an equidigital number, since it uses as much as digits as its factorization.

222134645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44426934.

The product of its digits is 11520, while the sum is 29.

The square root of 222134645 is about 14904.1821312006. The cubic root of 222134645 is about 605.6272846354.

Adding to 222134645 its reverse (546431222), we get a palindrome (768565867).

The spelling of 222134645 in words is "two hundred twenty-two million, one hundred thirty-four thousand, six hundred forty-five".