11321413221121 has 4 divisors (see below), whose sum is σ = 11711806780500. Its totient is φ = 10931019661744.

The previous prime is 11321413221113. The next prime is 11321413221137. The reversal of 11321413221121 is 12112231412311.

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 9584974513521 + 1736438707600 = 3095961^2 + 1317740^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321413221121 - 2³ = 11321413221113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321413221101) 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, 195196779646 + ... + 195196779703.

It is an arithmetic number, because the mean of its divisors is an integer number (2927951695125).

Almost surely, 2^{11321413221121} is an apocalyptic number.

It is an amenable number.

11321413221121 is a deficient number, since it is larger than the sum of its proper divisors (390393559379).

11321413221121 is an equidigital number, since it uses as much as digits as its factorization.

11321413221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390393559378.

The product of its digits is 576, while the sum is 25.

Adding to 11321413221121 its reverse (12112231412311), we get a palindrome (23433644633432).

The spelling of 11321413221121 in words is "eleven trillion, three hundred twenty-one billion, four hundred thirteen million, two hundred twenty-one thousand, one hundred twenty-one".