12021773 has 4 divisors (see below), whose sum is σ = 12031068. Its totient is φ = 12012480.

The previous prime is 12021761. The next prime is 12021797. The reversal of 12021773 is 37712021.

12021773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37712021 = 2879 ⋅13099.

It can be written as a sum of positive squares in 2 ways, for example, as 1800964 + 10220809 = 1342^2 + 3197^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021773 - 2²⁰ = 10973197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021473) 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, 2318 + ... + 5423.

It is an arithmetic number, because the mean of its divisors is an integer number (3007767).

Almost surely, 2^12021773 is an apocalyptic number.

It is an amenable number.

12021773 is a deficient number, since it is larger than the sum of its proper divisors (9295).

12021773 is an equidigital number, since it uses as much as digits as its factorization.

12021773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12021773 is about 3467.2428527578. The cubic root of 12021773 is about 229.0812307567.

Adding to 12021773 its reverse (37712021), we get a palindrome (49733794).

The spelling of 12021773 in words is "twelve million, twenty-one thousand, seven hundred seventy-three".