12021708 has 12 divisors (see below), whose sum is σ = 28050680. Its totient is φ = 4007232.

The previous prime is 12021701. The next prime is 12021749. The reversal of 12021708 is 80712021.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12021701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500893 + ... + 500916.

Almost surely, 2^12021708 is an apocalyptic number.

It is an amenable number.

12021708 is an abundant number, since it is smaller than the sum of its proper divisors (16028972).

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

12021708 is a wasteful number, since it uses less digits than its factorization.

12021708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001816 (or 1001814 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12021708 is about 3467.2334793031. The cubic root of 12021708 is about 229.0808178862.

Adding to 12021708 its reverse (80712021), we get a palindrome (92733729).

The spelling of 12021708 in words is "twelve million, twenty-one thousand, seven hundred eight".