222221606 has 16 divisors (see below), whose sum is σ = 362977200. Its totient is φ = 101632608.

The previous prime is 222221567. The next prime is 222221611. The reversal of 222221606 is 606122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99725 + ... + 101928.

It is an arithmetic number, because the mean of its divisors is an integer number (22686075).

Almost surely, 2^222221606 is an apocalyptic number.

222221606 is a deficient number, since it is larger than the sum of its proper divisors (140755594).

222221606 is a wasteful number, since it uses less digits than its factorization.

222221606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201703.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 222221606 is about 14907.0991812626. The cubic root of 222221606 is about 605.7063044018.

Adding to 222221606 its reverse (606122222), we get a palindrome (828343828).

The spelling of 222221606 in words is "two hundred twenty-two million, two hundred twenty-one thousand, six hundred six".