11221200002100 has 432 divisors, whose sum is σ = 36220647355200. Its totient is φ = 2679801907200.

The previous prime is 11221200002083. The next prime is 11221200002107. The reversal of 11221200002100 is 120000212211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221200002107) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 894897631 + ... + 894910169.

It is an arithmetic number, because the mean of its divisors is an integer number (83844091100).

Almost surely, 2^{11221200002100} is an apocalyptic number.

11221200002100 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 11221200002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18110323677600).

11221200002100 is an abundant number, since it is smaller than the sum of its proper divisors (24999447353100).

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

11221200002100 is a wasteful number, since it uses less digits than its factorization.

11221200002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944 (or 12926 counting only the distinct ones).

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

Adding to 11221200002100 its reverse (120000212211), we get a palindrome (11341200214311).

The spelling of 11221200002100 in words is "eleven trillion, two hundred twenty-one billion, two hundred million, two thousand, one hundred".