22012011200 has 84 divisors (see below), whose sum is σ = 54905559480. Its totient is φ = 8684144640.

The previous prime is 22012011199. The next prime is 22012011313. The reversal of 22012011200 is 211021022.

It is a happy 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, 22571 + ... + 211029.

Almost surely, 2^22012011200 is an apocalyptic number.

22012011200 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 22012011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27452779740).

22012011200 is an abundant number, since it is smaller than the sum of its proper divisors (32893548280).

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

22012011200 is a wasteful number, since it uses less digits than its factorization.

22012011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188554 (or 188539 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22012011200 its reverse (211021022), we get a palindrome (22223032222).

The spelling of 22012011200 in words is "twenty-two billion, twelve million, eleven thousand, two hundred".