1321481290841 has 2 divisors, whose sum is σ = 1321481290842. Its totient is φ = 1321481290840.

The previous prime is 1321481290781. The next prime is 1321481290861. The reversal of 1321481290841 is 1480921841231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661196659600 + 660284631241 = 813140^2 + 812579^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321481290841 - 2¹⁴ = 1321481274457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321481290792 and 1321481290801.

It is not a weakly prime, because it can be changed into another prime (1321481290861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660740645420 + 660740645421.

It is an arithmetic number, because the mean of its divisors is an integer number (660740645421).

Almost surely, 2^{1321481290841} is an apocalyptic number.

It is an amenable number.

1321481290841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321481290841 is an equidigital number, since it uses as much as digits as its factorization.

1321481290841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 1321481290841 in words is "one trillion, three hundred twenty-one billion, four hundred eighty-one million, two hundred ninety thousand, eight hundred forty-one".