221002200200 has 96 divisors (see below), whose sum is σ = 522044433000. Its totient is φ = 86993141760.

The previous prime is 221002200163. The next prime is 221002200233. The reversal of 221002200200 is 2002200122.

It can be written as a sum of positive squares in 12 ways, for example, as 4176002884 + 216826197316 = 64622^2 + 465646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6538544 + ... + 6572256.

Almost surely, 2^221002200200 is an apocalyptic number.

221002200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221002200200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261022216500).

221002200200 is an abundant number, since it is smaller than the sum of its proper divisors (301042232800).

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

221002200200 is a wasteful number, since it uses less digits than its factorization.

221002200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34251 (or 34242 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 221002200200 its reverse (2002200122), we get a palindrome (223004400322).

The spelling of 221002200200 in words is "two hundred twenty-one billion, two million, two hundred thousand, two hundred".