2163222 has 24 divisors (see below), whose sum is σ = 4788576. Its totient is φ = 705456.

The previous prime is 2163221. The next prime is 2163223. The reversal of 2163222 is 2223612.

It is an interprime number because it is at equal distance from previous prime (2163221) and next prime (2163223).

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 junction number, because it is equal to n+sod(n) for n = 2163195 and 2163204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (199524).

2^2163222 is an apocalyptic number.

2163222 is an abundant number, since it is smaller than the sum of its proper divisors (2625354).

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

2163222 is a wasteful number, since it uses less digits than its factorization.

2163222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612 (or 2609 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 2163222 is about 1470.7895838630. The cubic root of 2163222 is about 129.3303234382.

Adding to 2163222 its reverse (2223612), we get a palindrome (4386834).

The spelling of 2163222 in words is "two million, one hundred sixty-three thousand, two hundred twenty-two".