321030120000 has 280 divisors, whose sum is σ = 1073362039200. Its totient is φ = 84643328000.

The previous prime is 321030119947. The next prime is 321030120001. The reversal of 321030120000 is 21030123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (321030120001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10664971 + ... + 10695029.

Almost surely, 2^321030120000 is an apocalyptic number.

321030120000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321030120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536681019600).

321030120000 is an abundant number, since it is smaller than the sum of its proper divisors (752331919200).

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

321030120000 is an equidigital number, since it uses as much as digits as its factorization.

321030120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30183 (or 30158 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 321030120000 its reverse (21030123), we get a palindrome (321051150123).

The spelling of 321030120000 in words is "three hundred twenty-one billion, thirty million, one hundred twenty thousand".