222145563 has 4 divisors (see below), whose sum is σ = 296194088. Its totient is φ = 148097040.

The previous prime is 222145531. The next prime is 222145603. The reversal of 222145563 is 365541222.

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

It is not a de Polignac number, because 222145563 - 2⁵ = 222145531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222145563.

It is not an unprimeable number, because it can be changed into a prime (222146563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37024258 + ... + 37024263.

It is an arithmetic number, because the mean of its divisors is an integer number (74048522).

Almost surely, 2^222145563 is an apocalyptic number.

222145563 is a deficient number, since it is larger than the sum of its proper divisors (74048525).

222145563 is an equidigital number, since it uses as much as digits as its factorization.

222145563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74048524.

The product of its digits is 14400, while the sum is 30.

The square root of 222145563 is about 14904.5483997336. The cubic root of 222145563 is about 605.6372067413.

Adding to 222145563 its reverse (365541222), we get a palindrome (587686785).

The spelling of 222145563 in words is "two hundred twenty-two million, one hundred forty-five thousand, five hundred sixty-three".