11201022020 has 48 divisors (see below), whose sum is σ = 23820577200. Its totient is φ = 4423710720.

The previous prime is 11201022017. The next prime is 11201022037. The reversal of 11201022020 is 2022010211.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1350856516 + 9850165504 = 36754^2 + 99248^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11201021992 and 11201022010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1350446 + ... + 1358714.

It is an arithmetic number, because the mean of its divisors is an integer number (496262025).

Almost surely, 2^11201022020 is an apocalyptic number.

11201022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201022020 is an abundant number, since it is smaller than the sum of its proper divisors (12619555180).

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

11201022020 is a wasteful number, since it uses less digits than its factorization.

11201022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128 (or 9126 counting only the distinct ones).

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

Adding to 11201022020 its reverse (2022010211), we get a palindrome (13223032231).

The spelling of 11201022020 in words is "eleven billion, two hundred one million, twenty-two thousand, twenty".