11021221222110 has 288 divisors, whose sum is σ = 32406427347840. Its totient is φ = 2595238272000.

The previous prime is 11021221222057. The next prime is 11021221222111. The reversal of 11021221222110 is 1122212212011.

11021221222110 is a `hidden beast` number, since 1 + 10 + 212 + 212 + 221 + 10 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221222111) 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, 102192315 + ... + 102300105.

It is an arithmetic number, because the mean of its divisors is an integer number (112522317180).

Almost surely, 2^{11021221222110} is an apocalyptic number.

11021221222110 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 11021221222110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16203213673920).

11021221222110 is an abundant number, since it is smaller than the sum of its proper divisors (21385206125730).

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

11021221222110 is a wasteful number, since it uses less digits than its factorization.

11021221222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108096 (or 108082 counting only the distinct ones).

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

Adding to 11021221222110 its reverse (1122212212011), we get a palindrome (12143433434121).

It can be divided in two parts, 1102122 and 1222110, that added together give a palindrome (2324232).

The spelling of 11021221222110 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred ten".