11020011220 has 24 divisors (see below), whose sum is σ = 23578667784. Its totient is φ = 4324834176.

The previous prime is 11020011203. The next prime is 11020011241. The reversal of 11020011220 is 2211002011.

It can be written as a sum of positive squares in 4 ways, for example, as 1245525264 + 9774485956 = 35292^2 + 98866^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11020011197 and 11020011206.

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, 5197059 + ... + 5199178.

It is an arithmetic number, because the mean of its divisors is an integer number (982444491).

Almost surely, 2^11020011220 is an apocalyptic number.

11020011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020011220 is an abundant number, since it is smaller than the sum of its proper divisors (12558656564).

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

11020011220 is a wasteful number, since it uses less digits than its factorization.

11020011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396299 (or 10396297 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11020011220 its reverse (2211002011), we get a palindrome (13231013231).

The spelling of 11020011220 in words is "eleven billion, twenty million, eleven thousand, two hundred twenty".