320000221323000 has 1024 divisors, whose sum is σ = 1179777291264000. Its totient is φ = 80071960320000.

The previous prime is 320000221322917. The next prime is 320000221323011. The reversal of 320000221323000 is 323122000023.

It is a happy number.

320000221323000 is a `hidden beast` number, since 320 + 0 + 0 + 0 + 2 + 21 + 323 + 0 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6836565597 + ... + 6836612403.

It is an arithmetic number, because the mean of its divisors is an integer number (1152126261000).

Almost surely, 2^{320000221323000} is an apocalyptic number.

320000221323000 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 320000221323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589888645632000).

320000221323000 is an abundant number, since it is smaller than the sum of its proper divisors (859777069941000).

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

320000221323000 is a wasteful number, since it uses less digits than its factorization.

320000221323000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47070 (or 47050 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 320000221323000 its reverse (323122000023), we get a palindrome (320323343323023).

The spelling of 320000221323000 in words is "three hundred twenty trillion, two hundred twenty-one million, three hundred twenty-three thousand".