12221170 has 16 divisors (see below), whose sum is σ = 23690520. Its totient is φ = 4512384.

The previous prime is 12221117. The next prime is 12221171. The reversal of 12221170 is 7112221.

It can be written as a sum of positive squares in 4 ways, for example, as 3583449 + 8637721 = 1893^2 + 2939^2 .

It is not an unprimeable number, because it can be changed into a prime (12221171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46875 + ... + 47134.

Almost surely, 2^12221170 is an apocalyptic number.

12221170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221170 is a deficient number, since it is larger than the sum of its proper divisors (11469350).

12221170 is a wasteful number, since it uses less digits than its factorization.

12221170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94029.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12221170 is about 3495.8790024828. The cubic root of 12221170 is about 230.3408305371.

Adding to 12221170 its reverse (7112221), we get a palindrome (19333391).

The spelling of 12221170 in words is "twelve million, two hundred twenty-one thousand, one hundred seventy".