221250323320 has 128 divisors (see below), whose sum is σ = 550203192000. Its totient is φ = 79569838080.

The previous prime is 221250323311. The next prime is 221250323323. The reversal of 221250323320 is 23323052122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221250323323) 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, 3311040 + ... + 3377200.

Almost surely, 2^221250323320 is an apocalyptic number.

221250323320 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 221250323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275101596000).

221250323320 is an abundant number, since it is smaller than the sum of its proper divisors (328952868680).

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

221250323320 is a wasteful number, since it uses less digits than its factorization.

221250323320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66353 (or 66349 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 221250323320 its reverse (23323052122), we get a palindrome (244573375442).

The spelling of 221250323320 in words is "two hundred twenty-one billion, two hundred fifty million, three hundred twenty-three thousand, three hundred twenty".