11321301021 has 4 divisors (see below), whose sum is σ = 15095068032. Its totient is φ = 7547534012.

The previous prime is 11321300897. The next prime is 11321301037. The reversal of 11321301021 is 12010312311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11321301021 - 2²¹ = 11319203869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321306021) 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, 1886883501 + ... + 1886883506.

It is an arithmetic number, because the mean of its divisors is an integer number (3773767008).

Almost surely, 2^11321301021 is an apocalyptic number.

It is an amenable number.

11321301021 is a deficient number, since it is larger than the sum of its proper divisors (3773767011).

11321301021 is an equidigital number, since it uses as much as digits as its factorization.

11321301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773767010.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11321301021 its reverse (12010312311), we get a palindrome (23331613332).

The spelling of 11321301021 in words is "eleven billion, three hundred twenty-one million, three hundred one thousand, twenty-one".