221212212002200 has 24 divisors (see below), whose sum is σ = 514318392905580. Its totient is φ = 88484884800800.

The previous prime is 221212212002161. The next prime is 221212212002203. The reversal of 221212212002200 is 2200212212122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212212002203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553030529806 + ... + 553030530205.

Almost surely, 2^{221212212002200} is an apocalyptic number.

221212212002200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221212212002200 is an abundant number, since it is smaller than the sum of its proper divisors (293106180903380).

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

221212212002200 is a wasteful number, since it uses less digits than its factorization.

221212212002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106061060027 (or 1106061060018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221212212002200 its reverse (2200212212122), we get a palindrome (223412424214322).

The spelling of 221212212002200 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twelve million, two thousand, two hundred".