11331001020 has 48 divisors (see below), whose sum is σ = 31734517248. Its totient is φ = 3020865600.

The previous prime is 11331001001. The next prime is 11331001049. The reversal of 11331001020 is 2010013311.

11331001020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11331000987 and 11331001005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253345 + ... + 294695.

It is an arithmetic number, because the mean of its divisors is an integer number (661135776).

Almost surely, 2^11331001020 is an apocalyptic number.

11331001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331001020 is an abundant number, since it is smaller than the sum of its proper divisors (20403516228).

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

11331001020 is a wasteful number, since it uses less digits than its factorization.

11331001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45930 (or 45928 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 11331001020 its reverse (2010013311), we get a palindrome (13341014331).

The spelling of 11331001020 in words is "eleven billion, three hundred thirty-one million, one thousand, twenty".