222423561 has 12 divisors (see below), whose sum is σ = 321450480. Its totient is φ = 148203000.

The previous prime is 222423559. The next prime is 222423589. The reversal of 222423561 is 165324222.

It is a happy number.

It is not a de Polignac number, because 222423561 - 2¹ = 222423559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222424561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14770 + ... + 25748.

It is an arithmetic number, because the mean of its divisors is an integer number (26787540).

Almost surely, 2^222423561 is an apocalyptic number.

It is an amenable number.

222423561 is a deficient number, since it is larger than the sum of its proper divisors (99026919).

222423561 is a wasteful number, since it uses less digits than its factorization.

222423561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13236 (or 13233 counting only the distinct ones).

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

The square root of 222423561 is about 14913.8714289751. The cubic root of 222423561 is about 605.8897374789.

Adding to 222423561 its reverse (165324222), we get a palindrome (387747783).

The spelling of 222423561 in words is "two hundred twenty-two million, four hundred twenty-three thousand, five hundred sixty-one".