222222006 has 48 divisors (see below), whose sum is σ = 489265920. Its totient is φ = 72887040.

The previous prime is 222221971. The next prime is 222222029. The reversal of 222222006 is 600222222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 222222006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374446 + ... + 375038.

It is an arithmetic number, because the mean of its divisors is an integer number (10193040).

Almost surely, 2^222222006 is an apocalyptic number.

222222006 is an abundant number, since it is smaller than the sum of its proper divisors (267043914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222222006 is a wasteful number, since it uses less digits than its factorization.

222222006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222222006 is about 14907.1125976830. The cubic root of 222222006 is about 605.7066678264.

Adding to 222222006 its reverse (600222222), we get a palindrome (822444228).

The spelling of 222222006 in words is "two hundred twenty-two million, two hundred twenty-two thousand, six".