11212221211100 has 288 divisors, whose sum is σ = 30544899917952. Its totient is φ = 3477841920000.

The previous prime is 11212221211073. The next prime is 11212221211117. The reversal of 11212221211100 is 111212221211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 155947160 + ... + 156019040.

Almost surely, 2^{11212221211100} is an apocalyptic number.

11212221211100 is a gapful number since it is divisible by the number (10) 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 11212221211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15272449958976).

11212221211100 is an abundant number, since it is smaller than the sum of its proper divisors (19332678706852).

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

11212221211100 is a wasteful number, since it uses less digits than its factorization.

11212221211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72257 (or 72250 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11212221211100 its reverse (111212221211), we get a palindrome (11323433432311).

The spelling of 11212221211100 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, one hundred".