221330304200 has 24 divisors (see below), whose sum is σ = 514592957730. Its totient is φ = 88532121600.

The previous prime is 221330304199. The next prime is 221330304241. The reversal of 221330304200 is 2403033122.

It can be written as a sum of positive squares in 3 ways, for example, as 181873249156 + 39457055044 = 426466^2 + 198638^2 .

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 5 ways as a sum of consecutive naturals, for example, 553325561 + ... + 553325960.

Almost surely, 2^221330304200 is an apocalyptic number.

221330304200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221330304200 is an abundant number, since it is smaller than the sum of its proper divisors (293262653530).

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

221330304200 is a wasteful number, since it uses less digits than its factorization.

221330304200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106651537 (or 1106651528 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 221330304200 its reverse (2403033122), we get a palindrome (223733337322).

The spelling of 221330304200 in words is "two hundred twenty-one billion, three hundred thirty million, three hundred four thousand, two hundred".