22121110200 has 768 divisors, whose sum is σ = 86394470400. Its totient is φ = 4572057600.

The previous prime is 22121110147. The next prime is 22121110213. The reversal of 22121110200 is 201112122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 248551756 + ... + 248551844.

It is an arithmetic number, because the mean of its divisors is an integer number (112492800).

Almost surely, 2^22121110200 is an apocalyptic number.

22121110200 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 22121110200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43197235200).

22121110200 is an abundant number, since it is smaller than the sum of its proper divisors (64273360200).

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

22121110200 is a wasteful number, since it uses less digits than its factorization.

22121110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22121110200 its reverse (201112122), we get a palindrome (22322222322).

The spelling of 22121110200 in words is "twenty-two billion, one hundred twenty-one million, one hundred ten thousand, two hundred".