221838722200 has 48 divisors (see below), whose sum is σ = 546114745080. Its totient is φ = 83515752960.

The previous prime is 221838722173. The next prime is 221838722213. The reversal of 221838722200 is 2227838122.

221838722200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221838722200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32619942 + ... + 32626741.

Almost surely, 2^221838722200 is an apocalyptic number.

221838722200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221838722200 is an abundant number, since it is smaller than the sum of its proper divisors (324276022880).

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

221838722200 is a wasteful number, since it uses less digits than its factorization.

221838722200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65246716 (or 65246707 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 221838722200 in words is "two hundred twenty-one billion, eight hundred thirty-eight million, seven hundred twenty-two thousand, two hundred".