221121222110200 has 96 divisors (see below), whose sum is σ = 514965085950960. Its totient is φ = 88300875801600.

The previous prime is 221121222110161. The next prime is 221121222110203. The reversal of 221121222110200 is 2011222121122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121222110203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 867501172 + ... + 867756028.

Almost surely, 2^{221121222110200} is an apocalyptic number.

221121222110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221121222110200 is an abundant number, since it is smaller than the sum of its proper divisors (293843863840760).

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

221121222110200 is a wasteful number, since it uses less digits than its factorization.

221121222110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262097 (or 262088 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221121222110200 its reverse (2011222121122), we get a palindrome (223132444231322).

The spelling of 221121222110200 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, two hundred".