12021741 has 6 divisors (see below), whose sum is σ = 17364750. Its totient is φ = 8014488.

The previous prime is 12021701. The next prime is 12021749. The reversal of 12021741 is 14712021.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 427716 = 3405^2 + 654^2 .

It is not a de Polignac number, because 12021741 - 2⁶ = 12021677 is a prime.

It is a Curzon number.

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 (12021749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667866 + ... + 667883.

It is an arithmetic number, because the mean of its divisors is an integer number (2894125).

Almost surely, 2^12021741 is an apocalyptic number.

It is an amenable number.

12021741 is a deficient number, since it is larger than the sum of its proper divisors (5343009).

12021741 is a wasteful number, since it uses less digits than its factorization.

12021741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335755 (or 1335752 counting only the distinct ones).

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

The square root of 12021741 is about 3467.2382381371. The cubic root of 12021741 is about 229.0810274976.

Adding to 12021741 its reverse (14712021), we get a palindrome (26733762).

The spelling of 12021741 in words is "twelve million, twenty-one thousand, seven hundred forty-one".