2173222 has 4 divisors (see below), whose sum is σ = 3259836. Its totient is φ = 1086610.

The previous prime is 2173219. The next prime is 2173243. The reversal of 2173222 is 2223712.

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

It is a super-2 number, since 2×2173222² = 9445787722568, 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 2173222.

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, 543304 + ... + 543307.

It is an arithmetic number, because the mean of its divisors is an integer number (814959).

2^2173222 is an apocalyptic number.

2173222 is a deficient number, since it is larger than the sum of its proper divisors (1086614).

2173222 is a wasteful number, since it uses less digits than its factorization.

2173222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086613.

The product of its digits is 336, while the sum is 19.

The square root of 2173222 is about 1474.1851986776. The cubic root of 2173222 is about 129.5293037048.

Adding to 2173222 its reverse (2223712), we get a palindrome (4396934).

The spelling of 2173222 in words is "two million, one hundred seventy-three thousand, two hundred twenty-two".