11123220032 has 56 divisors (see below), whose sum is σ = 22568367360. Its totient is φ = 5436979200.

The previous prime is 11123220029. The next prime is 11123220133. The reversal of 11123220032 is 23002232111.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3611069 + ... + 3614147.

It is an arithmetic number, because the mean of its divisors is an integer number (403006560).

Almost surely, 2^11123220032 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 11123220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11284183680).

11123220032 is an abundant number, since it is smaller than the sum of its proper divisors (11445147328).

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

11123220032 is a wasteful number, since it uses less digits than its factorization.

11123220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339 (or 4329 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11123220032 its reverse (23002232111), we get a palindrome (34125452143).

The spelling of 11123220032 in words is "eleven billion, one hundred twenty-three million, two hundred twenty thousand, thirty-two".