321210012012 has 24 divisors (see below), whose sum is σ = 769746516336. Its totient is φ = 104176219968.

The previous prime is 321210011981. The next prime is 321210012037. The reversal of 321210012012 is 210210012123.

It is a junction number, because it is equal to n+sod(n) for n = 321210011982 and 321210012000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361722543 + ... + 361723430.

It is an arithmetic number, because the mean of its divisors is an integer number (32072771514).

Almost surely, 2^321210012012 is an apocalyptic number.

It is an amenable number.

321210012012 is an abundant number, since it is smaller than the sum of its proper divisors (448536504324).

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

321210012012 is a wasteful number, since it uses less digits than its factorization.

321210012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723446017 (or 723446015 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 321210012012 its reverse (210210012123), we get a palindrome (531420024135).

The spelling of 321210012012 in words is "three hundred twenty-one billion, two hundred ten million, twelve thousand, twelve".