22212170 has 8 divisors (see below), whose sum is σ = 39981924. Its totient is φ = 8884864.

The previous prime is 22212133. The next prime is 22212187. The reversal of 22212170 is 7121222.

It can be written as a sum of positive squares in 2 ways, for example, as 20529961 + 1682209 = 4531^2 + 1297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22212170² = 986760992217800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110599 + ... + 1110618.

Almost surely, 2^22212170 is an apocalyptic number.

22212170 is a deficient number, since it is larger than the sum of its proper divisors (17769754).

22212170 is a wasteful number, since it uses less digits than its factorization.

22212170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221224.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22212170 is about 4712.9788881343. The cubic root of 22212170 is about 281.1018235108.

Adding to 22212170 its reverse (7121222), we get a palindrome (29333392).

The spelling of 22212170 in words is "twenty-two million, two hundred twelve thousand, one hundred seventy".