1222164 has 36 divisors (see below), whose sum is σ = 3272724. Its totient is φ = 383232.

The previous prime is 1222159. The next prime is 1222171. The reversal of 1222164 is 4612221.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 810000 = 642^2 + 900^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 387 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (90909).

2^1222164 is an apocalyptic number.

It is an amenable number.

1222164 is an abundant number, since it is smaller than the sum of its proper divisors (2050560).

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

1222164 is a wasteful number, since it uses less digits than its factorization.

1222164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024 (or 2019 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1222164 is about 1105.5152644808. The cubic root of 1222164 is about 106.9161132477.

Adding to 1222164 its reverse (4612221), we get a palindrome (5834385).

The spelling of 1222164 in words is "one million, two hundred twenty-two thousand, one hundred sixty-four".