221311049746200 has 96 divisors (see below), whose sum is σ = 686068793586000. Its totient is φ = 59015889448960.

The previous prime is 221311049746169. The next prime is 221311049746219. The reversal of 221311049746200 is 2647940113122.

It is a super-2 number, since 2×221311049746200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95984476 + ... + 98263124.

Almost surely, 2^{221311049746200} is an apocalyptic number.

221311049746200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221311049746200 is an abundant number, since it is smaller than the sum of its proper divisors (464757743839800).

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

221311049746200 is a wasteful number, since it uses less digits than its factorization.

221311049746200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440541 (or 2440532 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

Adding to 221311049746200 its reverse (2647940113122), we get a palindrome (223958989859322).

The spelling of 221311049746200 in words is "two hundred twenty-one trillion, three hundred eleven billion, forty-nine million, seven hundred forty-six thousand, two hundred".