22012122311200 has 144 divisors (see below), whose sum is σ = 61435197895680. Its totient is φ = 7544386437120.

The previous prime is 22012122311177. The next prime is 22012122311203. The reversal of 22012122311200 is 211322121022.

It is not an unprimeable number, because it can be changed into a prime (22012122311203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15439744 + ... + 16805056.

It is an arithmetic number, because the mean of its divisors is an integer number (426633318720).

Almost surely, 2^{22012122311200} is an apocalyptic number.

22012122311200 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 22012122311200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30717598947840).

22012122311200 is an abundant number, since it is smaller than the sum of its proper divisors (39423075584480).

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

22012122311200 is a wasteful number, since it uses less digits than its factorization.

22012122311200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368219 (or 1368206 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22012122311200 its reverse (211322121022), we get a palindrome (22223444432222).

The spelling of 22012122311200 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, three hundred eleven thousand, two hundred".