222185581223 has 4 divisors (see below), whose sum is σ = 222438929400. Its totient is φ = 221932233048.

The previous prime is 222185581199. The next prime is 222185581229. The reversal of 222185581223 is 322185581222.

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

It is a cyclic number.

It is not a de Polignac number, because 222185581223 - 2¹⁸ = 222185319079 is a prime.

It is a super-3 number, since 3×222185581223³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222185581229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126672773 + ... + 126674526.

It is an arithmetic number, because the mean of its divisors is an integer number (55609732350).

Almost surely, 2^222185581223 is an apocalyptic number.

222185581223 is a deficient number, since it is larger than the sum of its proper divisors (253348177).

222185581223 is an equidigital number, since it uses as much as digits as its factorization.

222185581223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253348176.

The product of its digits is 153600, while the sum is 41.

Subtracting 222185581223 from its reverse (322185581222), we obtain a palindrome (99999999999).

The spelling of 222185581223 in words is "two hundred twenty-two billion, one hundred eighty-five million, five hundred eighty-one thousand, two hundred twenty-three".