11011003020 has 144 divisors (see below), whose sum is σ = 36117664128. Its totient is φ = 2704711680.

The previous prime is 11011003013. The next prime is 11011003033. The reversal of 11011003020 is 2030011011.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11011002993 and 11011003011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105540 + ... + 182100.

It is an arithmetic number, because the mean of its divisors is an integer number (250817112).

Almost surely, 2^11011003020 is an apocalyptic number.

11011003020 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 11011003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18058832064).

11011003020 is an abundant number, since it is smaller than the sum of its proper divisors (25106661108).

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

11011003020 is a wasteful number, since it uses less digits than its factorization.

11011003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76640 (or 76635 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11011003020 its reverse (2030011011), we get a palindrome (13041014031).

The spelling of 11011003020 in words is "eleven billion, eleven million, three thousand, twenty".