11221011020 has 12 divisors (see below), whose sum is σ = 23564123184. Its totient is φ = 4488404400.

The previous prime is 11221011001. The next prime is 11221011029. The reversal of 11221011020 is 2011012211.

It is a super-2 number, since 2×11221011020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221010992 and 11221011010.

It is not an unprimeable number, because it can be changed into a prime (11221011029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280525256 + ... + 280525295.

It is an arithmetic number, because the mean of its divisors is an integer number (1963676932).

Almost surely, 2^11221011020 is an apocalyptic number.

11221011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221011020 is an abundant number, since it is smaller than the sum of its proper divisors (12343112164).

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

11221011020 is a wasteful number, since it uses less digits than its factorization.

11221011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561050560 (or 561050558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11221011020 its reverse (2011012211), we get a palindrome (13232023231).

The spelling of 11221011020 in words is "eleven billion, two hundred twenty-one million, eleven thousand, twenty".