11222222221100 has 288 divisors, whose sum is σ = 27587908260864. Its totient is φ = 3926880000000.

The previous prime is 11222222221087. The next prime is 11222222221151. The reversal of 11222222221100 is 112222222211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a zygodrome in base 10.

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, 1234427555 + ... + 1234436645.

It is an arithmetic number, because the mean of its divisors is an integer number (95791348128).

Almost surely, 2^{11222222221100} is an apocalyptic number.

11222222221100 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 11222222221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13793954130432).

11222222221100 is an abundant number, since it is smaller than the sum of its proper divisors (16365686039764).

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

11222222221100 is a wasteful number, since it uses less digits than its factorization.

11222222221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529 (or 9522 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11222222221100 its reverse (112222222211), we get a palindrome (11334444443311).

11222222221100 divided by its reverse (112222222211) gives a square (100 = 10²).

It can be divided in two parts, 112222 and 22221100, that added together give a palindrome (22333322).

The spelling of 11222222221100 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred".