1321231213232 has 40 divisors (see below), whose sum is σ = 3026465594400. Its totient is φ = 546716362752.

The previous prime is 1321231213207. The next prime is 1321231213277. The reversal of 1321231213232 is 2323121321231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203388257 + ... + 203394752.

It is an arithmetic number, because the mean of its divisors is an integer number (75661639860).

Almost surely, 2^{1321231213232} is an apocalyptic number.

It is an amenable number.

1321231213232 is an abundant number, since it is smaller than the sum of its proper divisors (1705234381168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321231213232 is a wasteful number, since it uses less digits than its factorization.

1321231213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406783053 (or 406783047 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

Adding to 1321231213232 its reverse (2323121321231), we get a palindrome (3644352534463).

The spelling of 1321231213232 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-two".