1321241612 has 12 divisors (see below), whose sum is σ = 2318119440. Its totient is φ = 658921776.

The previous prime is 1321241609. The next prime is 1321241617. The reversal of 1321241612 is 2161421231.

It is not an unprimeable number, because it can be changed into a prime (1321241617) 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 in 3 ways as a sum of consecutive naturals, for example, 423008 + ... + 426119.

It is an arithmetic number, because the mean of its divisors is an integer number (193176620).

Almost surely, 2^1321241612 is an apocalyptic number.

It is an amenable number.

1321241612 is a deficient number, since it is larger than the sum of its proper divisors (996877828).

1321241612 is a wasteful number, since it uses less digits than its factorization.

1321241612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849520 (or 849518 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1321241612 is about 36348.8873557362. The cubic root of 1321241612 is about 1097.3051421810.

Adding to 1321241612 its reverse (2161421231), we get a palindrome (3482662843).

The spelling of 1321241612 in words is "one billion, three hundred twenty-one million, two hundred forty-one thousand, six hundred twelve".