11013021331020 has 72 divisors (see below), whose sum is σ = 34183052279376. Its totient is φ = 2868507879552.

The previous prime is 11013021331019. The next prime is 11013021331049. The reversal of 11013021331020 is 2013312031011.

11013021331020 is a `hidden beast` number, since 1 + 10 + 1 + 302 + 1 + 331 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11013021330984 and 11013021331002.

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 23 ways as a sum of consecutive naturals, for example, 711427747 + ... + 711443226.

Almost surely, 2^{11013021331020} is an apocalyptic number.

11013021331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11013021331020 is an abundant number, since it is smaller than the sum of its proper divisors (23170030948356).

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

11013021331020 is a wasteful number, since it uses less digits than its factorization.

11013021331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422871031 (or 1422871026 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11013021331020 its reverse (2013312031011), we get a palindrome (13026333362031).

The spelling of 11013021331020 in words is "eleven trillion, thirteen billion, twenty-one million, three hundred thirty-one thousand, twenty".