12251147 has 2 divisors, whose sum is σ = 12251148. Its totient is φ = 12251146.

The previous prime is 12251131. The next prime is 12251149. The reversal of 12251147 is 74115221.

12251147 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12251147 - 2⁴ = 12251131 is a prime.

Together with 12251149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12251149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125573 + 6125574.

It is an arithmetic number, because the mean of its divisors is an integer number (6125574).

Almost surely, 2^12251147 is an apocalyptic number.

12251147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251147 is an equidigital number, since it uses as much as digits as its factorization.

12251147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 23.

The square root of 12251147 is about 3500.1638533074. The cubic root of 12251147 is about 230.5290091681.

Adding to 12251147 its reverse (74115221), we get a palindrome (86366368).

The spelling of 12251147 in words is "twelve million, two hundred fifty-one thousand, one hundred forty-seven".