221322210000 has 200 divisors, whose sum is σ = 719203831104. Its totient is φ = 58627200000.

The previous prime is 221322209981. The next prime is 221322210001. The reversal of 221322210000 is 12223122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221322210001) 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, 4505572 + ... + 4554428.

Almost surely, 2^221322210000 is an apocalyptic number.

221322210000 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 221322210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359601915552).

221322210000 is an abundant number, since it is smaller than the sum of its proper divisors (497881621104).

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

221322210000 is a wasteful number, since it uses less digits than its factorization.

221322210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49039 (or 49018 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 221322210000 its reverse (12223122), we get a palindrome (221334433122).

It can be divided in two parts, 2213222 and 10000, that added together give a palindrome (2223222).

The spelling of 221322210000 in words is "two hundred twenty-one billion, three hundred twenty-two million, two hundred ten thousand".