11331020221321 has 4 divisors (see below), whose sum is σ = 11331064663444. Its totient is φ = 11330975779200.

The previous prime is 11331020221319. The next prime is 11331020221331. The reversal of 11331020221321 is 12312202013311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5917231391296 + 5413788830025 = 2432536^2 + 2326755^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331020221321 - 2¹ = 11331020221319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331020221292 and 11331020221301.

It is not an unprimeable number, because it can be changed into a prime (11331020221331) 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, 21836400 + ... + 22349281.

It is an arithmetic number, because the mean of its divisors is an integer number (2832766165861).

Almost surely, 2^{11331020221321} is an apocalyptic number.

It is an amenable number.

11331020221321 is a deficient number, since it is larger than the sum of its proper divisors (44442123).

11331020221321 is an equidigital number, since it uses as much as digits as its factorization.

11331020221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44442122.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11331020221321 its reverse (12312202013311), we get a palindrome (23643222234632).

The spelling of 11331020221321 in words is "eleven trillion, three hundred thirty-one billion, twenty million, two hundred twenty-one thousand, three hundred twenty-one".