22021210321000 has 512 divisors, whose sum is σ = 62858038763520. Its totient is φ = 7122018816000.

The previous prime is 22021210320973. The next prime is 22021210321003. The reversal of 22021210321000 is 12301212022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22021210321003) 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 127 ways as a sum of consecutive naturals, for example, 356952157 + ... + 357013843.

It is an arithmetic number, because the mean of its divisors is an integer number (122769606960).

Almost surely, 2^{22021210321000} is an apocalyptic number.

22021210321000 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 22021210321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31429019381760).

22021210321000 is an abundant number, since it is smaller than the sum of its proper divisors (40836828442520).

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

22021210321000 is a wasteful number, since it uses less digits than its factorization.

22021210321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61842 (or 61828 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22021210321000 its reverse (12301212022), we get a palindrome (22033511533022).

The spelling of 22021210321000 in words is "twenty-two trillion, twenty-one billion, two hundred ten million, three hundred twenty-one thousand".