221457530000 has 200 divisors, whose sum is σ = 614179999488. Its totient is φ = 75753216000.

The previous prime is 221457529999. The next prime is 221457530053. The reversal of 221457530000 is 35754122.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32406584 + ... + 32413416.

Almost surely, 2^221457530000 is an apocalyptic number.

221457530000 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 221457530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307089999744).

221457530000 is an abundant number, since it is smaller than the sum of its proper divisors (392722469488).

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

221457530000 is an equidigital number, since it uses as much as digits as its factorization.

221457530000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331 (or 7310 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 221457530000 in words is "two hundred twenty-one billion, four hundred fifty-seven million, five hundred thirty thousand".