22012102200 has 288 divisors, whose sum is σ = 76612596480. Its totient is φ = 5221920000.

The previous prime is 22012102159. The next prime is 22012102201. The reversal of 22012102200 is 220121022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012102201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3408975 + ... + 3415425.

It is an arithmetic number, because the mean of its divisors is an integer number (266015960).

Almost surely, 2^22012102200 is an apocalyptic number.

22012102200 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 22012102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38306298240).

22012102200 is an abundant number, since it is smaller than the sum of its proper divisors (54600494280).

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

22012102200 is a wasteful number, since it uses less digits than its factorization.

22012102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539 (or 6519 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22012102200 its reverse (220121022), we get a palindrome (22232223222).

22012102200 divided by its reverse (220121022) gives a square (100 = 10²).

The spelling of 22012102200 in words is "twenty-two billion, twelve million, one hundred two thousand, two hundred".