321123132012 has 12 divisors (see below), whose sum is σ = 749287308056. Its totient is φ = 107041044000.

The previous prime is 321123131993. The next prime is 321123132019. The reversal of 321123132012 is 210231321123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 321123132012.

It is not an unprimeable number, because it can be changed into a prime (321123132019) by changing a digit.

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, 13380130489 + ... + 13380130512.

Almost surely, 2^321123132012 is an apocalyptic number.

It is an amenable number.

321123132012 is an abundant number, since it is smaller than the sum of its proper divisors (428164176044).

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

321123132012 is a wasteful number, since it uses less digits than its factorization.

321123132012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26760261008 (or 26760261006 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321123132012 its reverse (210231321123), we get a palindrome (531354453135).

The spelling of 321123132012 in words is "three hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-two thousand, twelve".