221066899200 has 648 divisors, whose sum is σ = 909505565696. Its totient is φ = 50181120000.

The previous prime is 221066899187. The next prime is 221066899201. The reversal of 221066899200 is 2998660122.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221066899201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 60881385 + ... + 60885015.

Almost surely, 2^221066899200 is an apocalyptic number.

221066899200 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 221066899200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454752782848).

221066899200 is an abundant number, since it is smaller than the sum of its proper divisors (688438666496).

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

221066899200 is a wasteful number, since it uses less digits than its factorization.

221066899200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3799 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 221066899200 in words is "two hundred twenty-one billion, sixty-six million, eight hundred ninety-nine thousand, two hundred".