11222122221112 has 128 divisors (see below), whose sum is σ = 24871536000000. Its totient is φ = 4689329909760.

The previous prime is 11222122221077. The next prime is 11222122221161. The reversal of 11222122221112 is 21112222122211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34925764 + ... + 35245612.

It is an arithmetic number, because the mean of its divisors is an integer number (194308875000).

Almost surely, 2^{11222122221112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222122221112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12435768000000).

11222122221112 is an abundant number, since it is smaller than the sum of its proper divisors (13649413778888).

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

11222122221112 is a wasteful number, since it uses less digits than its factorization.

11222122221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320429 (or 320425 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 11222122221112 its reverse (21112222122211), we get a palindrome (32334344343323).

The spelling of 11222122221112 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".