12754221 has 4 divisors (see below), whose sum is σ = 17005632. Its totient is φ = 8502812.

The previous prime is 12754219. The next prime is 12754271. The reversal of 12754221 is 12245721.

12754221 is digitally balanced in base 2 and base 4, because in such bases 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12754221 - 2¹ = 12754219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12754191 and 12754200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12754271) 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, 2125701 + ... + 2125706.

It is an arithmetic number, because the mean of its divisors is an integer number (4251408).

Almost surely, 2^12754221 is an apocalyptic number.

It is an amenable number.

12754221 is a deficient number, since it is larger than the sum of its proper divisors (4251411).

12754221 is an equidigital number, since it uses as much as digits as its factorization.

12754221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251410.

The product of its digits is 1120, while the sum is 24.

The square root of 12754221 is about 3571.3052235842. The cubic root of 12754221 is about 233.6422138342.

Adding to 12754221 its reverse (12245721), we get a palindrome (24999942).

The spelling of 12754221 in words is "twelve million, seven hundred fifty-four thousand, two hundred twenty-one".