221201220200 has 48 divisors (see below), whose sum is σ = 514568583360. Its totient is φ = 88433048000.

The previous prime is 221201220181. The next prime is 221201220203. The reversal of 221201220200 is 2022102122.

It is not an unprimeable number, because it can be changed into a prime (221201220203) 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, 78635 + ... + 669765.

It is an arithmetic number, because the mean of its divisors is an integer number (10720178820).

Almost surely, 2^221201220200 is an apocalyptic number.

221201220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201220200 is an abundant number, since it is smaller than the sum of its proper divisors (293367363160).

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

221201220200 is a wasteful number, since it uses less digits than its factorization.

221201220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593018 (or 593009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221201220200 its reverse (2022102122), we get a palindrome (223223322322).

The spelling of 221201220200 in words is "two hundred twenty-one billion, two hundred one million, two hundred twenty thousand, two hundred".