11021020220 has 72 divisors (see below), whose sum is σ = 27851221440. Its totient is φ = 3648328320.

The previous prime is 11021020201. The next prime is 11021020229. The reversal of 11021020220 is 2202012011.

It is a happy number.

11021020220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021020229) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 165476 + ... + 222315.

It is an arithmetic number, because the mean of its divisors is an integer number (386822520).

Almost surely, 2^11021020220 is an apocalyptic number.

11021020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021020220 is an abundant number, since it is smaller than the sum of its proper divisors (16830201220).

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

11021020220 is a wasteful number, since it uses less digits than its factorization.

11021020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387843 (or 387834 counting only the distinct ones).

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

Adding to 11021020220 its reverse (2202012011), we get a palindrome (13223032231).

The spelling of 11021020220 in words is "eleven billion, twenty-one million, twenty thousand, two hundred twenty".