321204421424012 has 48 divisors (see below), whose sum is σ = 642753216000000. Its totient is φ = 137585248484544.

The previous prime is 321204421424011. The next prime is 321204421424123. The reversal of 321204421424012 is 210424124402123.

It is a super-2 number, since 2×321204421424012² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321204421424012.

It is not an unprimeable number, because it can be changed into a prime (321204421424011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866524189 + ... + 1866696267.

It is an arithmetic number, because the mean of its divisors is an integer number (13390692000000).

Almost surely, 2^{321204421424012} is an apocalyptic number.

It is an amenable number.

321204421424012 is an abundant number, since it is smaller than the sum of its proper divisors (321548794575988).

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

321204421424012 is a wasteful number, since it uses less digits than its factorization.

321204421424012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207438 (or 207436 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 321204421424012 its reverse (210424124402123), we get a palindrome (531628545826135).

The spelling of 321204421424012 in words is "three hundred twenty-one trillion, two hundred four billion, four hundred twenty-one million, four hundred twenty-four thousand, twelve".