1201232321312 has 96 divisors (see below), whose sum is σ = 2437290777600. Its totient is φ = 582490301440.

The previous prime is 1201232321309. The next prime is 1201232321323. The reversal of 1201232321312 is 2131232321021.

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 15 ways as a sum of consecutive naturals, for example, 96579158 + ... + 96591594.

It is an arithmetic number, because the mean of its divisors is an integer number (25388445600).

Almost surely, 2^{1201232321312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201232321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218645388800).

1201232321312 is an abundant number, since it is smaller than the sum of its proper divisors (1236058456288).

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

1201232321312 is a wasteful number, since it uses less digits than its factorization.

1201232321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13074 (or 13066 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1201232321312 its reverse (2131232321021), we get a palindrome (3332464642333).

The spelling of 1201232321312 in words is "one trillion, two hundred one billion, two hundred thirty-two million, three hundred twenty-one thousand, three hundred twelve".