321204120012012 has 12 divisors (see below), whose sum is σ = 749476280028056. Its totient is φ = 107068040004000.

The previous prime is 321204120011981. The next prime is 321204120012071. The reversal of 321204120012012 is 210210021402123.

It is a happy number.

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 321204120012012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13383505000489 + ... + 13383505000512.

Almost surely, 2^{321204120012012} is an apocalyptic number.

It is an amenable number.

321204120012012 is an abundant number, since it is smaller than the sum of its proper divisors (428272160016044).

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

321204120012012 is a wasteful number, since it uses less digits than its factorization.

321204120012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26767010001008 (or 26767010001006 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 321204120012012 its reverse (210210021402123), we get a palindrome (531414141414135).

The spelling of 321204120012012 in words is "three hundred twenty-one trillion, two hundred four billion, one hundred twenty million, twelve thousand, twelve".