11202001021 has 8 divisors (see below), whose sum is σ = 11393696600. Its totient is φ = 11010565440.

The previous prime is 11202001007. The next prime is 11202001033. The reversal of 11202001021 is 12010020211.

It can be written as a sum of positive squares in 4 ways, for example, as 11323225 + 11190677796 = 3365^2 + 105786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11202001021 - 2¹³ = 11201992829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202000989 and 11202001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202001051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22915 + ... + 151423.

It is an arithmetic number, because the mean of its divisors is an integer number (1424212075).

Almost surely, 2^11202001021 is an apocalyptic number.

It is an amenable number.

11202001021 is a deficient number, since it is larger than the sum of its proper divisors (191695579).

11202001021 is a wasteful number, since it uses less digits than its factorization.

11202001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129999.

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

Adding to 11202001021 its reverse (12010020211), we get a palindrome (23212021232).

The spelling of 11202001021 in words is "eleven billion, two hundred two million, one thousand, twenty-one".