11201102020 has 12 divisors (see below), whose sum is σ = 23522314284. Its totient is φ = 4480440800.

The previous prime is 11201101999. The next prime is 11201102021. The reversal of 11201102020 is 2020110211.

It can be written as a sum of positive squares in 2 ways, for example, as 2264046724 + 8937055296 = 47582^2 + 94536^2 .

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 = 11201101988 and 11201102006.

It is not an unprimeable number, because it can be changed into a prime (11201102021) 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, 280027531 + ... + 280027570.

It is an arithmetic number, because the mean of its divisors is an integer number (1960192857).

Almost surely, 2^11201102020 is an apocalyptic number.

11201102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201102020 is an abundant number, since it is smaller than the sum of its proper divisors (12321212264).

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

11201102020 is a wasteful number, since it uses less digits than its factorization.

11201102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560055110 (or 560055108 counting only the distinct ones).

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

Adding to 11201102020 its reverse (2020110211), we get a palindrome (13221212231).

The spelling of 11201102020 in words is "eleven billion, two hundred one million, one hundred two thousand, twenty".