222444401 has 4 divisors (see below), whose sum is σ = 223399332. Its totient is φ = 221489472.

The previous prime is 222444379. The next prime is 222444421. The reversal of 222444401 is 104444222.

222444401 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, and also an emirpimes, since its reverse is a distinct semiprime: 104444222 = 2 ⋅52222111.

It can be written as a sum of positive squares in 2 ways, for example, as 23775376 + 198669025 = 4876^2 + 14095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222444401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222444421) 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, 477116 + ... + 477581.

It is an arithmetic number, because the mean of its divisors is an integer number (55849833).

Almost surely, 2^222444401 is an apocalyptic number.

It is an amenable number.

222444401 is a deficient number, since it is larger than the sum of its proper divisors (954931).

222444401 is an equidigital number, since it uses as much as digits as its factorization.

222444401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954930.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 222444401 is about 14914.5700910217. The cubic root of 222444401 is about 605.9086598565.

Adding to 222444401 its reverse (104444222), we get a palindrome (326888623).

The spelling of 222444401 in words is "two hundred twenty-two million, four hundred forty-four thousand, four hundred one".