222122266 has 4 divisors (see below), whose sum is σ = 333183402. Its totient is φ = 111061132.

The previous prime is 222122261. The next prime is 222122267. The reversal of 222122266 is 662221222.

It is a happy number.

222122266 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 only one way, i.e., 129481641 + 92640625 = 11379^2 + 9625^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222122266.

It is not an unprimeable number, because it can be changed into a prime (222122261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530565 + ... + 55530568.

Almost surely, 2^222122266 is an apocalyptic number.

222122266 is a deficient number, since it is larger than the sum of its proper divisors (111061136).

222122266 is a wasteful number, since it uses less digits than its factorization.

222122266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111061135.

The product of its digits is 2304, while the sum is 25.

The square root of 222122266 is about 14903.7668392927. The cubic root of 222122266 is about 605.6160344026.

Adding to 222122266 its reverse (662221222), we get a palindrome (884343488).

The spelling of 222122266 in words is "two hundred twenty-two million, one hundred twenty-two thousand, two hundred sixty-six".