12254821 has 4 divisors (see below), whose sum is σ = 12277152. Its totient is φ = 12232492.

The previous prime is 12254797. The next prime is 12254843. The reversal of 12254821 is 12845221.

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 12254821 - 2⁵ = 12254789 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 (12254861) 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, 10321 + ... + 11446.

It is an arithmetic number, because the mean of its divisors is an integer number (3069288).

Almost surely, 2^12254821 is an apocalyptic number.

It is an amenable number.

12254821 is a deficient number, since it is larger than the sum of its proper divisors (22331).

12254821 is an equidigital number, since it uses as much as digits as its factorization.

12254821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330.

The product of its digits is 1280, while the sum is 25.

The square root of 12254821 is about 3500.6886465380. The cubic root of 12254821 is about 230.5520513352.

The spelling of 12254821 in words is "twelve million, two hundred fifty-four thousand, eight hundred twenty-one".