11144021020 has 24 divisors (see below), whose sum is σ = 25529939568. Its totient is φ = 4052371200.

The previous prime is 11144020981. The next prime is 11144021039. The reversal of 11144021020 is 2012044111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11144020985 and 11144021003.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25327101 + ... + 25327540.

It is an arithmetic number, because the mean of its divisors is an integer number (1063747482).

Almost surely, 2^11144021020 is an apocalyptic number.

11144021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11144021020 is an abundant number, since it is smaller than the sum of its proper divisors (14385918548).

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

11144021020 is a wasteful number, since it uses less digits than its factorization.

11144021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50654661 (or 50654659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11144021020 its reverse (2012044111), we get a palindrome (13156065131).

The spelling of 11144021020 in words is "eleven billion, one hundred forty-four million, twenty-one thousand, twenty".