11021101020 has 144 divisors (see below), whose sum is σ = 35438588640. Its totient is φ = 2762846208.

The previous prime is 11021100991. The next prime is 11021101093. The reversal of 11021101020 is 2010112011.

It is a happy number.

11021101020 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 (9).

It is a junction number, because it is equal to n+sod(n) for n = 11021100993 and 11021101011.

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 47 ways as a sum of consecutive naturals, for example, 3649071 + ... + 3652089.

It is an arithmetic number, because the mean of its divisors is an integer number (246101310).

Almost surely, 2^11021101020 is an apocalyptic number.

11021101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17719294320).

11021101020 is an abundant number, since it is smaller than the sum of its proper divisors (24417487620).

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

11021101020 is a wasteful number, since it uses less digits than its factorization.

11021101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244 (or 4239 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11021101020 its reverse (2010112011), we get a palindrome (13031213031).

The spelling of 11021101020 in words is "eleven billion, twenty-one million, one hundred one thousand, twenty".