22011211200 has 672 divisors, whose sum is σ = 85311325440. Its totient is φ = 4910284800.

The previous prime is 22011211199. The next prime is 22011211231. The reversal of 22011211200 is 211211022.

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

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37118104 + ... + 37118696.

Almost surely, 2^22011211200 is an apocalyptic number.

22011211200 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 22011211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42655662720).

22011211200 is an abundant number, since it is smaller than the sum of its proper divisors (63300114240).

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

22011211200 is a wasteful number, since it uses less digits than its factorization.

22011211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 670 counting only the distinct ones).

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

Adding to 22011211200 its reverse (211211022), we get a palindrome (22222422222).

The spelling of 22011211200 in words is "twenty-two billion, eleven million, two hundred eleven thousand, two hundred".