11001300021 has 12 divisors (see below), whose sum is σ = 16320247372. Its totient is φ = 7135978176.

The previous prime is 11001300001. The next prime is 11001300059. The reversal of 11001300021 is 12000310011.

11001300021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6256019025 + 4745280996 = 79095^2 + 68886^2 .

It is not a de Polignac number, because 11001300021 - 2¹¹ = 11001297973 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001299976 and 11001300012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001300001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16518136 + ... + 16518801.

Almost surely, 2^11001300021 is an apocalyptic number.

It is an amenable number.

11001300021 is a deficient number, since it is larger than the sum of its proper divisors (5318947351).

11001300021 is a wasteful number, since it uses less digits than its factorization.

11001300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33036980 (or 33036977 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11001300021 its reverse (12000310011), we get a palindrome (23001610032).

The spelling of 11001300021 in words is "eleven billion, one million, three hundred thousand, twenty-one".