12401227 has 4 divisors (see below), whose sum is σ = 12411000. Its totient is φ = 12391456.

The previous prime is 12401189. The next prime is 12401251. The reversal of 12401227 is 72210421.

It is a happy number.

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: 72210421 = 37 ⋅1951633.

It is a cyclic number.

It is not a de Polignac number, because 12401227 - 2¹⁵ = 12368459 is a prime.

It is a super-2 number, since 2×12401227² = 307580862211058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401267) 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, 2638 + ... + 5635.

It is an arithmetic number, because the mean of its divisors is an integer number (3102750).

Almost surely, 2^12401227 is an apocalyptic number.

12401227 is a deficient number, since it is larger than the sum of its proper divisors (9773).

12401227 is an equidigital number, since it uses as much as digits as its factorization.

12401227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12401227 is about 3521.5375903148. The cubic root of 12401227 is about 231.4665396115.

Adding to 12401227 its reverse (72210421), we get a palindrome (84611648).

The spelling of 12401227 in words is "twelve million, four hundred one thousand, two hundred twenty-seven".