12021170 has 24 divisors (see below), whose sum is σ = 25171884. Its totient is φ = 4121376.

The previous prime is 12021131. The next prime is 12021179. The reversal of 12021170 is 7112021.

It can be written as a sum of positive squares in 2 ways, for example, as 10233601 + 1787569 = 3199^2 + 1337^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (12021179) 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, 11777 + ... + 12756.

Almost surely, 2^12021170 is an apocalyptic number.

12021170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021170 is an abundant number, since it is smaller than the sum of its proper divisors (13150714).

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

12021170 is a wasteful number, since it uses less digits than its factorization.

12021170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24554 (or 24547 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12021170 is about 3467.1558949664. The cubic root of 12021170 is about 229.0774005316.

Adding to 12021170 its reverse (7112021), we get a palindrome (19133191).

The spelling of 12021170 in words is "twelve million, twenty-one thousand, one hundred seventy".