11010021220 has 48 divisors (see below), whose sum is σ = 25235517888. Its totient is φ = 4001650560.

The previous prime is 11010021161. The next prime is 11010021241. The reversal of 11010021220 is 2212001011.

11010021220 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 11010021197 and 11010021206.

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 15 ways as a sum of consecutive naturals, for example, 473302 + ... + 496018.

It is an arithmetic number, because the mean of its divisors is an integer number (525739956).

Almost surely, 2^11010021220 is an apocalyptic number.

11010021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11010021220 is an abundant number, since it is smaller than the sum of its proper divisors (14225496668).

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

11010021220 is a wasteful number, since it uses less digits than its factorization.

11010021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24940 (or 24938 counting only the distinct ones).

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

Adding to 11010021220 its reverse (2212001011), we get a palindrome (13222022231).

The spelling of 11010021220 in words is "eleven billion, ten million, twenty-one thousand, two hundred twenty".