1321101340441 has 4 divisors (see below), whose sum is σ = 1351824627472. Its totient is φ = 1290378053412.

The previous prime is 1321101340387. The next prime is 1321101340451. The reversal of 1321101340441 is 1440431011231.

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 1321101340441 - 2¹¹ = 1321101338393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321101340451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15361643451 + ... + 15361643536.

It is an arithmetic number, because the mean of its divisors is an integer number (337956156868).

Almost surely, 2^{1321101340441} is an apocalyptic number.

It is an amenable number.

1321101340441 is a deficient number, since it is larger than the sum of its proper divisors (30723287031).

1321101340441 is an equidigital number, since it uses as much as digits as its factorization.

1321101340441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30723287030.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1321101340441 its reverse (1440431011231), we get a palindrome (2761532351672).

The spelling of 1321101340441 in words is "one trillion, three hundred twenty-one billion, one hundred one million, three hundred forty thousand, four hundred forty-one".