1321443212 has 12 divisors (see below), whose sum is σ = 2312990736. Its totient is φ = 660588720.

The previous prime is 1321443209. The next prime is 1321443251. The reversal of 1321443212 is 2123441231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8864 + ... + 52167.

It is an arithmetic number, because the mean of its divisors is an integer number (192749228).

Almost surely, 2^1321443212 is an apocalyptic number.

It is an amenable number.

1321443212 is a deficient number, since it is larger than the sum of its proper divisors (991547524).

1321443212 is a wasteful number, since it uses less digits than its factorization.

1321443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66448 (or 66446 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1321443212 is about 36351.6603747339. The cubic root of 1321443212 is about 1097.3609496539.

Adding to 1321443212 its reverse (2123441231), we get a palindrome (3444884443).

The spelling of 1321443212 in words is "one billion, three hundred twenty-one million, four hundred forty-three thousand, two hundred twelve".