222245906 has 4 divisors (see below), whose sum is σ = 333368862. Its totient is φ = 111122952.

The previous prime is 222245899. The next prime is 222245911. The reversal of 222245906 is 609542222.

222245906 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: 609542222 = 2 ⋅304771111.

It can be written as a sum of positive squares in only one way, i.e., 129026881 + 93219025 = 11359^2 + 9655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561475 + ... + 55561478.

Almost surely, 2^222245906 is an apocalyptic number.

222245906 is a deficient number, since it is larger than the sum of its proper divisors (111122956).

222245906 is a wasteful number, since it uses less digits than its factorization.

222245906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111122955.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 222245906 is about 14907.9142068902. The cubic root of 222245906 is about 605.7283816531.

The spelling of 222245906 in words is "two hundred twenty-two million, two hundred forty-five thousand, nine hundred six".