11212222222110 has 768 divisors, whose sum is σ = 35840096206848. Its totient is φ = 2193690470400.

The previous prime is 11212222222051. The next prime is 11212222222111. The reversal of 11212222222110 is 1122222221211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212222222111) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2727368955 + ... + 2727373065.

It is an arithmetic number, because the mean of its divisors is an integer number (46666791936).

Almost surely, 2^{11212222222110} is an apocalyptic number.

11212222222110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212222222110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17920048103424).

11212222222110 is an abundant number, since it is smaller than the sum of its proper divisors (24627873984738).

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

11212222222110 is a wasteful number, since it uses less digits than its factorization.

11212222222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11212222222110 its reverse (1122222221211), we get a palindrome (12334444443321).

The spelling of 11212222222110 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred ten".