221313042200 has 48 divisors (see below), whose sum is σ = 514764240480. Its totient is φ = 88488844160.

The previous prime is 221313042187. The next prime is 221313042221. The reversal of 221313042200 is 2240313122.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 263294 + ... + 715506.

It is an arithmetic number, because the mean of its divisors is an integer number (10724255010).

Almost surely, 2^221313042200 is an apocalyptic number.

221313042200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221313042200 is an abundant number, since it is smaller than the sum of its proper divisors (293451198280).

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

221313042200 is a wasteful number, since it uses less digits than its factorization.

221313042200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454676 (or 454667 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 221313042200 its reverse (2240313122), we get a palindrome (223553355322).

The spelling of 221313042200 in words is "two hundred twenty-one billion, three hundred thirteen million, forty-two thousand, two hundred".