221132320200 has 144 divisors (see below), whose sum is σ = 810148482000. Its totient is φ = 53607830400.

The previous prime is 221132320187. The next prime is 221132320219. The reversal of 221132320200 is 2023231122.

221132320200 is a `hidden beast` number, since 221 + 13 + 232 + 0 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5564350 + ... + 5603949.

It is an arithmetic number, because the mean of its divisors is an integer number (5626031125).

Almost surely, 2^221132320200 is an apocalyptic number.

221132320200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221132320200 is an abundant number, since it is smaller than the sum of its proper divisors (589016161800).

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

221132320200 is a wasteful number, since it uses less digits than its factorization.

221132320200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11168332 (or 11168320 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221132320200 its reverse (2023231122), we get a palindrome (223155551322).

The spelling of 221132320200 in words is "two hundred twenty-one billion, one hundred thirty-two million, three hundred twenty thousand, two hundred".