22101220201112 has 128 divisors (see below), whose sum is σ = 49820775883200. Its totient is φ = 9080393269248.

The previous prime is 22101220201111. The next prime is 22101220201157. The reversal of 22101220201112 is 21110202210122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101220201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20055248 + ... + 21128544.

Almost surely, 2^{22101220201112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22101220201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24910387941600).

22101220201112 is an abundant number, since it is smaller than the sum of its proper divisors (27719555682088).

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

22101220201112 is a wasteful number, since it uses less digits than its factorization.

22101220201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073965 (or 1073961 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22101220201112 its reverse (21110202210122), we get a palindrome (43211422411234).

The spelling of 22101220201112 in words is "twenty-two trillion, one hundred one billion, two hundred twenty million, two hundred one thousand, one hundred twelve".