12274921 has 4 divisors (see below), whose sum is σ = 12314452. Its totient is φ = 12235392.

The previous prime is 12274919. The next prime is 12274937. The reversal of 12274921 is 12947221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 11634921 = 800^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 12274921 - 2¹ = 12274919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12274921.

It is not an unprimeable number, because it can be changed into a prime (12274961) 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, 19296 + ... + 19921.

It is an arithmetic number, because the mean of its divisors is an integer number (3078613).

Almost surely, 2^12274921 is an apocalyptic number.

It is an amenable number.

12274921 is a deficient number, since it is larger than the sum of its proper divisors (39531).

12274921 is an equidigital number, since it uses as much as digits as its factorization.

12274921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39530.

The product of its digits is 2016, while the sum is 28.

The square root of 12274921 is about 3503.5583340370. The cubic root of 12274921 is about 230.6780307346.

The spelling of 12274921 in words is "twelve million, two hundred seventy-four thousand, nine hundred twenty-one".