1321232012 has 6 divisors (see below), whose sum is σ = 2312156028. Its totient is φ = 660616004.

The previous prime is 1321232009. The next prime is 1321232039. The reversal of 1321232012 is 2102321231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165153998 + ... + 165154005.

It is an arithmetic number, because the mean of its divisors is an integer number (385359338).

Almost surely, 2^1321232012 is an apocalyptic number.

It is an amenable number.

1321232012 is a deficient number, since it is larger than the sum of its proper divisors (990924016).

1321232012 is a wasteful number, since it uses less digits than its factorization.

1321232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330308007 (or 330308005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1321232012 is about 36348.7553019357. The cubic root of 1321232012 is about 1097.3024845407.

Adding to 1321232012 its reverse (2102321231), we get a palindrome (3423553243).

The spelling of 1321232012 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, twelve".