12281330 has 8 divisors (see below), whose sum is σ = 22106412. Its totient is φ = 4912528.

The previous prime is 12281329. The next prime is 12281341. The reversal of 12281330 is 3318221.

It can be written as a sum of positive squares in 2 ways, for example, as 12187081 + 94249 = 3491^2 + 307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614057 + ... + 614076.

Almost surely, 2^12281330 is an apocalyptic number.

12281330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12281330 is a deficient number, since it is larger than the sum of its proper divisors (9825082).

12281330 is a wasteful number, since it uses less digits than its factorization.

12281330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228140.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12281330 is about 3504.4728562225. The cubic root of 12281330 is about 230.7181710681.

Adding to 12281330 its reverse (3318221), we get a palindrome (15599551).

The spelling of 12281330 in words is "twelve million, two hundred eighty-one thousand, three hundred thirty".