11201020011 has 32 divisors (see below), whose sum is σ = 17475744000. Its totient is φ = 7070981184.

The previous prime is 11201020007. The next prime is 11201020043. The reversal of 11201020011 is 11002010211.

It is a happy number.

It is not a de Polignac number, because 11201020011 - 2² = 11201020007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11201019975 and 11201020002.

It is not an unprimeable number, because it can be changed into a prime (11201020081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1516335 + ... + 1523703.

It is an arithmetic number, because the mean of its divisors is an integer number (546117000).

Almost surely, 2^11201020011 is an apocalyptic number.

11201020011 is a deficient number, since it is larger than the sum of its proper divisors (6274723989).

11201020011 is a wasteful number, since it uses less digits than its factorization.

11201020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360 (or 10354 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11201020011 its reverse (11002010211), we get a palindrome (22203030222).

It can be divided in two parts, 112010200 and 11, that added together give a palindrome (112010211).

The spelling of 11201020011 in words is "eleven billion, two hundred one million, twenty thousand, eleven".