12251146 has 4 divisors (see below), whose sum is σ = 18376722. Its totient is φ = 6125572.

The previous prime is 12251131. The next prime is 12251147. The reversal of 12251146 is 64115221.

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

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 616225 = 3411^2 + 785^2 .

It is not an unprimeable number, because it can be changed into a prime (12251147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3062785 + ... + 3062788.

Almost surely, 2^12251146 is an apocalyptic number.

12251146 is a deficient number, since it is larger than the sum of its proper divisors (6125576).

12251146 is an equidigital number, since it uses as much as digits as its factorization.

12251146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6125575.

The product of its digits is 480, while the sum is 22.

The square root of 12251146 is about 3500.1637104570. The cubic root of 12251146 is about 230.5290028958.

Adding to 12251146 its reverse (64115221), we get a palindrome (76366367).

The spelling of 12251146 in words is "twelve million, two hundred fifty-one thousand, one hundred forty-six".