21230321022000 has 320 divisors, whose sum is σ = 76067020149120. Its totient is φ = 5660280576000.

The previous prime is 21230321021999. The next prime is 21230321022007. The reversal of 21230321022000 is 22012303212.

21230321022000 is a `hidden beast` number, since 2 + 1 + 230 + 3 + 210 + 220 + 0 + 0 = 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 (21230321022007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287945140 + ... + 288018860.

It is an arithmetic number, because the mean of its divisors is an integer number (237709437966).

Almost surely, 2^{21230321022000} is an apocalyptic number.

21230321022000 is a gapful number since it is divisible by the number (20) 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 21230321022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38033510074560).

21230321022000 is an abundant number, since it is smaller than the sum of its proper divisors (54836699127120).

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

21230321022000 is a wasteful number, since it uses less digits than its factorization.

21230321022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79086 (or 79064 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21230321022000 its reverse (22012303212), we get a palindrome (21252333325212).

The spelling of 21230321022000 in words is "twenty-one trillion, two hundred thirty billion, three hundred twenty-one million, twenty-two thousand".