22012011111200 has 216 divisors, whose sum is σ = 59675047997796. Its totient is φ = 7921845043200.

The previous prime is 22012011111193. The next prime is 22012011111263. The reversal of 22012011111200 is 211111021022.

It can be written as a sum of positive squares in 6 ways, for example, as 1267885008016 + 20744126103184 = 1126004^2 + 4554572^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8217452 + ... + 10561748.

Almost surely, 2^{22012011111200} is an apocalyptic number.

22012011111200 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 22012011111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29837523998898).

22012011111200 is an abundant number, since it is smaller than the sum of its proper divisors (37663036886596).

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

22012011111200 is a wasteful number, since it uses less digits than its factorization.

22012011111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344436 (or 2344412 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22012011111200 its reverse (211111021022), we get a palindrome (22223122132222).

The spelling of 22012011111200 in words is "twenty-two trillion, twelve billion, eleven million, one hundred eleven thousand, two hundred".