222256747 has 4 divisors (see below), whose sum is σ = 222496920. Its totient is φ = 222016576.

The previous prime is 222256739. The next prime is 222256781. The reversal of 222256747 is 747652222.

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 222256747 - 2³ = 222256739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222256847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118693 + ... + 120550.

It is an arithmetic number, because the mean of its divisors is an integer number (55624230).

Almost surely, 2^222256747 is an apocalyptic number.

222256747 is a deficient number, since it is larger than the sum of its proper divisors (240173).

222256747 is an equidigital number, since it uses as much as digits as its factorization.

222256747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240172.

The product of its digits is 94080, while the sum is 37.

The square root of 222256747 is about 14908.2778012754. The cubic root of 222256747 is about 605.7382304954.

The spelling of 222256747 in words is "two hundred twenty-two million, two hundred fifty-six thousand, seven hundred forty-seven".