11001122000 has 160 divisors (see below), whose sum is σ = 29312195328. Its totient is φ = 3960000000.

The previous prime is 11001121979. The next prime is 11001122029. The reversal of 11001122000 is 22110011.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a zygodrome in base 10.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2219525 + ... + 2224475.

Almost surely, 2^11001122000 is an apocalyptic number.

11001122000 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 11001122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14656097664).

11001122000 is an abundant number, since it is smaller than the sum of its proper divisors (18311073328).

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

11001122000 is a wasteful number, since it uses less digits than its factorization.

11001122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086 (or 5070 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11001122000 its reverse (22110011), we get a palindrome (11023232011).

The spelling of 11001122000 in words is "eleven billion, one million, one hundred twenty-two thousand".