222234561 has 6 divisors (see below), whose sum is σ = 321005490. Its totient is φ = 148156368.

The previous prime is 222234553. The next prime is 222234563. The reversal of 222234561 is 165432222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 172108161 + 50126400 = 13119^2 + 7080^2 .

It is not a de Polignac number, because 222234561 - 2³ = 222234553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222234563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12346356 + ... + 12346373.

It is an arithmetic number, because the mean of its divisors is an integer number (53500915).

Almost surely, 2^222234561 is an apocalyptic number.

It is an amenable number.

222234561 is a deficient number, since it is larger than the sum of its proper divisors (98770929).

222234561 is a wasteful number, since it uses less digits than its factorization.

222234561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24692735 (or 24692732 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 222234561 is about 14907.5336994420. The cubic root of 222234561 is about 605.7180745935.

Adding to 222234561 its reverse (165432222), we get a palindrome (387666783).

The spelling of 222234561 in words is "two hundred twenty-two million, two hundred thirty-four thousand, five hundred sixty-one".