11002221020 has 96 divisors (see below), whose sum is σ = 26719773696. Its totient is φ = 3727526400.

The previous prime is 11002221001. The next prime is 11002221079. The reversal of 11002221020 is 2012220011.

It is a happy number.

11002221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11002220992 and 11002221010.

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 31 ways as a sum of consecutive naturals, for example, 4822280 + ... + 4824560.

It is an arithmetic number, because the mean of its divisors is an integer number (278330976).

Almost surely, 2^11002221020 is an apocalyptic number.

11002221020 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 11002221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13359886848).

11002221020 is an abundant number, since it is smaller than the sum of its proper divisors (15717552676).

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

11002221020 is a wasteful number, since it uses less digits than its factorization.

11002221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2689 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11002221020 its reverse (2012220011), we get a palindrome (13014441031).

The spelling of 11002221020 in words is "eleven billion, two million, two hundred twenty-one thousand, twenty".