321213033123018 has 16 divisors (see below), whose sum is σ = 680215834848960. Its totient is φ = 100772716273856.

The previous prime is 321213033122999. The next prime is 321213033123019. The reversal of 321213033123018 is 810321330312123.

It is a self number, because there is not a number n which added to its sum of digits gives 321213033123018.

It is not an unprimeable number, because it can be changed into a prime (321213033123019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574573691678 + ... + 1574573691881.

It is an arithmetic number, because the mean of its divisors is an integer number (42513489678060).

Almost surely, 2^{321213033123018} is an apocalyptic number.

321213033123018 is an abundant number, since it is smaller than the sum of its proper divisors (359002801725942).

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

321213033123018 is a wasteful number, since it uses less digits than its factorization.

321213033123018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149147383581.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 321213033123018 in words is "three hundred twenty-one trillion, two hundred thirteen billion, thirty-three million, one hundred twenty-three thousand, eighteen".