222711745 has 4 divisors (see below), whose sum is σ = 267254100. Its totient is φ = 178169392.

The previous prime is 222711739. The next prime is 222711757. The reversal of 222711745 is 547117222.

222711745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97002801 + 125708944 = 9849^2 + 11212^2 .

It is a cyclic number.

It is not a de Polignac number, because 222711745 - 2⁷ = 222711617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22271170 + ... + 22271179.

It is an arithmetic number, because the mean of its divisors is an integer number (66813525).

Almost surely, 2^222711745 is an apocalyptic number.

It is an amenable number.

222711745 is a deficient number, since it is larger than the sum of its proper divisors (44542355).

222711745 is an equidigital number, since it uses as much as digits as its factorization.

222711745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44542354.

The product of its digits is 7840, while the sum is 31.

The square root of 222711745 is about 14923.5299108488. The cubic root of 222711745 is about 606.1512990556.

Adding to 222711745 its reverse (547117222), we get a palindrome (769828967).

The spelling of 222711745 in words is "two hundred twenty-two million, seven hundred eleven thousand, seven hundred forty-five".