221331343000 has 128 divisors (see below), whose sum is σ = 522908305920. Its totient is φ = 87682953600.

The previous prime is 221331342949. The next prime is 221331343001. The reversal of 221331343000 is 343133122.

221331343000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331343001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50038789 + ... + 50043211.

It is an arithmetic number, because the mean of its divisors is an integer number (4085221140).

Almost surely, 2^221331343000 is an apocalyptic number.

221331343000 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 221331343000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261454152960).

221331343000 is an abundant number, since it is smaller than the sum of its proper divisors (301576962920).

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

221331343000 is a wasteful number, since it uses less digits than its factorization.

221331343000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914 (or 4900 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 221331343000 its reverse (343133122), we get a palindrome (221674476122).

The spelling of 221331343000 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred forty-three thousand".