321210130020120 has 144 divisors (see below), whose sum is σ = 1147463460496080. Its totient is φ = 77869122418560.

The previous prime is 321210130020083. The next prime is 321210130020121. The reversal of 321210130020120 is 21020031012123.

321210130020120 is a `hidden beast` number, since 3 + 212 + 10 + 1 + 300 + 20 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 321210130020093 and 321210130020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321210130020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3686941404 + ... + 3687028523.

It is an arithmetic number, because the mean of its divisors is an integer number (7968496253445).

Almost surely, 2^{321210130020120} is an apocalyptic number.

321210130020120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321210130020120 is an abundant number, since it is smaller than the sum of its proper divisors (826253330475960).

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

321210130020120 is a wasteful number, since it uses less digits than its factorization.

321210130020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373969966 (or 7373969948 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 321210130020120 its reverse (21020031012123), we get a palindrome (342230161032243).

The spelling of 321210130020120 in words is "three hundred twenty-one trillion, two hundred ten billion, one hundred thirty million, twenty thousand, one hundred twenty".