11331324421 has 2 divisors, whose sum is σ = 11331324422. Its totient is φ = 11331324420.

The previous prime is 11331324419. The next prime is 11331324457. The reversal of 11331324421 is 12442313311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10597673025 + 733651396 = 102945^2 + 27086^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331324421 - 2¹ = 11331324419 is a prime.

Together with 11331324419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331324401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665662210 + 5665662211.

It is an arithmetic number, because the mean of its divisors is an integer number (5665662211).

Almost surely, 2^11331324421 is an apocalyptic number.

It is an amenable number.

11331324421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331324421 is an equidigital number, since it uses as much as digits as its factorization.

11331324421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

Adding to 11331324421 its reverse (12442313311), we get a palindrome (23773637732).

The spelling of 11331324421 in words is "eleven billion, three hundred thirty-one million, three hundred twenty-four thousand, four hundred twenty-one".