1066222 has 4 divisors (see below), whose sum is σ = 1599336. Its totient is φ = 533110.

The previous prime is 1066217. The next prime is 1066231. The reversal of 1066222 is 2226601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1066222² = 2273658706568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266554 + ... + 266557.

It is an arithmetic number, because the mean of its divisors is an integer number (399834).

2^1066222 is an apocalyptic number.

1066222 is a deficient number, since it is larger than the sum of its proper divisors (533114).

1066222 is an equidigital number, since it uses as much as digits as its factorization.

1066222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533113.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1066222 is about 1032.5802632241. The cubic root of 1066222 is about 102.1603910015.

It can be divided in two parts, 106 and 6222, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 1066222 in words is "one million, sixty-six thousand, two hundred twenty-two".