222445361 has 2 divisors, whose sum is σ = 222445362. Its totient is φ = 222445360.

The previous prime is 222445337. The next prime is 222445373. The reversal of 222445361 is 163544222.

222445361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135862336 + 86583025 = 11656^2 + 9305^2 .

It is a cyclic number.

It is not a de Polignac number, because 222445361 - 2²² = 218251057 is a prime.

It is not a weakly prime, because it can be changed into another prime (222445261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111222680 + 111222681.

It is an arithmetic number, because the mean of its divisors is an integer number (111222681).

Almost surely, 2^222445361 is an apocalyptic number.

It is an amenable number.

222445361 is a deficient number, since it is larger than the sum of its proper divisors (1).

222445361 is an equidigital number, since it uses as much as digits as its factorization.

222445361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 222445361 is about 14914.6022742814. The cubic root of 222445361 is about 605.9095314922.

Adding to 222445361 its reverse (163544222), we get a palindrome (385989583).

The spelling of 222445361 in words is "two hundred twenty-two million, four hundred forty-five thousand, three hundred sixty-one".