222006556 has 12 divisors (see below), whose sum is σ = 389105640. Its totient is φ = 110833520.

The previous prime is 222006503. The next prime is 222006581. The reversal of 222006556 is 655600222.

It is a super-2 number, since 2×222006556² = 98573821813962272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39475 + ... + 44746.

It is an arithmetic number, because the mean of its divisors is an integer number (32425470).

Almost surely, 2^222006556 is an apocalyptic number.

It is an amenable number.

222006556 is a deficient number, since it is larger than the sum of its proper divisors (167099084).

222006556 is a wasteful number, since it uses less digits than its factorization.

222006556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84884 (or 84882 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 222006556 is about 14899.8844290820. The cubic root of 222006556 is about 605.5108550881.

Adding to 222006556 its reverse (655600222), we get a palindrome (877606778).

The spelling of 222006556 in words is "two hundred twenty-two million, six thousand, five hundred fifty-six".