321213320010 has 128 divisors (see below), whose sum is σ = 936460984320. Its totient is φ = 77701377600.

The previous prime is 321213319993. The next prime is 321213320011. The reversal of 321213320010 is 10023312123.

321213320010 is a `hidden beast` number, since 321 + 2 + 1 + 332 + 0 + 0 + 10 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (321213320011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1258315 + ... + 1491905.

It is an arithmetic number, because the mean of its divisors is an integer number (7316101440).

Almost surely, 2^321213320010 is an apocalyptic number.

321213320010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 321213320010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468230492160).

321213320010 is an abundant number, since it is smaller than the sum of its proper divisors (615247664310).

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

321213320010 is a wasteful number, since it uses less digits than its factorization.

321213320010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234081 (or 234075 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 321213320010 its reverse (10023312123), we get a palindrome (331236632133).

The spelling of 321213320010 in words is "three hundred twenty-one billion, two hundred thirteen million, three hundred twenty thousand, ten".