11202013021 has 4 divisors (see below), whose sum is σ = 11203065532. Its totient is φ = 11200960512.

The previous prime is 11202012979. The next prime is 11202013037. The reversal of 11202013021 is 12031020211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12031020211 = 7 ⋅1718717173.

It can be written as a sum of positive squares in 2 ways, for example, as 6445841796 + 4756171225 = 80286^2 + 68965^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202013021 - 2¹⁵ = 11201980253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202012992 and 11202013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202013321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510126 + ... + 531631.

It is an arithmetic number, because the mean of its divisors is an integer number (2800766383).

Almost surely, 2^11202013021 is an apocalyptic number.

It is an amenable number.

11202013021 is a deficient number, since it is larger than the sum of its proper divisors (1052511).

11202013021 is a wasteful number, since it uses less digits than its factorization.

11202013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052510.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11202013021 its reverse (12031020211), we get a palindrome (23233033232).

The spelling of 11202013021 in words is "eleven billion, two hundred two million, thirteen thousand, twenty-one".