22022111200 has 72 divisors (see below), whose sum is σ = 53797056768. Its totient is φ = 8803015680.

The previous prime is 22022111191. The next prime is 22022111227. The reversal of 22022111200 is 211122022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1322124 + ... + 1338676.

It is an arithmetic number, because the mean of its divisors is an integer number (747181344).

Almost surely, 2^22022111200 is an apocalyptic number.

22022111200 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 22022111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26898528384).

22022111200 is an abundant number, since it is smaller than the sum of its proper divisors (31774945568).

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

22022111200 is a wasteful number, since it uses less digits than its factorization.

22022111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236 (or 18223 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22022111200 its reverse (211122022), we get a palindrome (22233233222).

The spelling of 22022111200 in words is "twenty-two billion, twenty-two million, one hundred eleven thousand, two hundred".