11021231013020 has 48 divisors (see below), whose sum is σ = 23838616781280. Its totient is φ = 4276982640384.

The previous prime is 11021231012959. The next prime is 11021231013041. The reversal of 11021231013020 is 2031013212011.

It is a self number, because there is not a number n which added to its sum of digits gives 11021231013020.

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 15 ways as a sum of consecutive naturals, for example, 21203675 + ... + 21717234.

It is an arithmetic number, because the mean of its divisors is an integer number (496637849610).

Almost surely, 2^{11021231013020} is an apocalyptic number.

11021231013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021231013020 is an abundant number, since it is smaller than the sum of its proper divisors (12817385768260).

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

11021231013020 is a wasteful number, since it uses less digits than its factorization.

11021231013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42921302 (or 42921300 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11021231013020 its reverse (2031013212011), we get a palindrome (13052244225031).

The spelling of 11021231013020 in words is "eleven trillion, twenty-one billion, two hundred thirty-one million, thirteen thousand, twenty".