1122166 has 4 divisors (see below), whose sum is σ = 1683252. Its totient is φ = 561082.

The previous prime is 1122157. The next prime is 1122179. The reversal of 1122166 is 6612211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6612211 = 281 ⋅23531.

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, 280540 + ... + 280543.

It is an arithmetic number, because the mean of its divisors is an integer number (420813).

2^1122166 is an apocalyptic number.

1122166 is a deficient number, since it is larger than the sum of its proper divisors (561086).

1122166 is an equidigital number, since it uses as much as digits as its factorization.

1122166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561085.

The product of its digits is 144, while the sum is 19.

The square root of 1122166 is about 1059.3233689483. The cubic root of 1122166 is about 103.9167850117.

Adding to 1122166 its reverse (6612211), we get a palindrome (7734377).

It can be divided in two parts, 112 and 2166, that added together give a triangular number (2278 = T₆₇).

The spelling of 1122166 in words is "one million, one hundred twenty-two thousand, one hundred sixty-six".