221000201212200 has 48 divisors (see below), whose sum is σ = 685100623759680. Its totient is φ = 58933386989760.

The previous prime is 221000201212117. The next prime is 221000201212207. The reversal of 221000201212200 is 2212102000122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221000201212200.

It is not an unprimeable number, because it can be changed into a prime (221000201212207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184166833744 + ... + 184166834943.

It is an arithmetic number, because the mean of its divisors is an integer number (14272929661660).

Almost surely, 2^{221000201212200} is an apocalyptic number.

221000201212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000201212200 is an abundant number, since it is smaller than the sum of its proper divisors (464100422547480).

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

221000201212200 is a wasteful number, since it uses less digits than its factorization.

221000201212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368333668706 (or 368333668697 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221000201212200 its reverse (2212102000122), we get a palindrome (223212303212322).

The spelling of 221000201212200 in words is "two hundred twenty-one trillion, two hundred one million, two hundred twelve thousand, two hundred".