12021174 has 48 divisors (see below), whose sum is σ = 28725840. Its totient is φ = 3602880.

The previous prime is 12021131. The next prime is 12021179. The reversal of 12021174 is 47112021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 21304 + ... + 21860.

It is an arithmetic number, because the mean of its divisors is an integer number (598455).

Almost surely, 2^12021174 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14362920).

12021174 is an abundant number, since it is smaller than the sum of its proper divisors (16704666).

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

12021174 is a wasteful number, since it uses less digits than its factorization.

12021174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 12021174 is about 3467.1564718080. The cubic root of 12021174 is about 229.0774259398.

Adding to 12021174 its reverse (47112021), we get a palindrome (59133195).

The spelling of 12021174 in words is "twelve million, twenty-one thousand, one hundred seventy-four".