221244410000 has 100 divisors (see below), whose sum is σ = 536280235392. Its totient is φ = 88394448000.

The previous prime is 221244409999. The next prime is 221244410099. The reversal of 221244410000 is 14442122.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8857529 + ... + 8882471.

Almost surely, 2^221244410000 is an apocalyptic number.

221244410000 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 221244410000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268140117696).

221244410000 is an abundant number, since it is smaller than the sum of its proper divisors (315035825392).

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

221244410000 is an equidigital number, since it uses as much as digits as its factorization.

221244410000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25858 (or 25837 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221244410000 its reverse (14442122), we get a palindrome (221258852122).

The spelling of 221244410000 in words is "two hundred twenty-one billion, two hundred forty-four million, four hundred ten thousand".