11212220111202 has 512 divisors, whose sum is σ = 29352001536000. Its totient is φ = 3137027201280.

The previous prime is 11212220111119. The next prime is 11212220111203. The reversal of 11212220111202 is 20211102221211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11212220111203) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 25540364499 + ... + 25540364937.

It is an arithmetic number, because the mean of its divisors is an integer number (57328128000).

Almost surely, 2^{11212220111202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212220111202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14676000768000).

11212220111202 is an abundant number, since it is smaller than the sum of its proper divisors (18139781424798).

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

11212220111202 is a wasteful number, since it uses less digits than its factorization.

11212220111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212220111202 its reverse (20211102221211), we get a palindrome (31423322332413).

The spelling of 11212220111202 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, two hundred two".