11001010920 has 64 divisors (see below), whose sum is σ = 34067658240. Its totient is φ = 2838969600.

The previous prime is 11001010919. The next prime is 11001010949. The reversal of 11001010920 is 2901010011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11001010920.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474911 + ... + 1482350.

It is an arithmetic number, because the mean of its divisors is an integer number (532307160).

Almost surely, 2^11001010920 is an apocalyptic number.

11001010920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001010920 is an abundant number, since it is smaller than the sum of its proper divisors (23066647320).

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

11001010920 is a wasteful number, since it uses less digits than its factorization.

11001010920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957306 (or 2957302 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 11001010920 its reverse (2901010011), we get a palindrome (13902020931).

The spelling of 11001010920 in words is "eleven billion, one million, ten thousand, nine hundred twenty".