1116411403721 has 2 divisors, whose sum is σ = 1116411403722. Its totient is φ = 1116411403720.

The previous prime is 1116411403703. The next prime is 1116411403729. The reversal of 1116411403721 is 1273041146111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686186916496 + 430224487225 = 828364^2 + 655915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116411403721 - 2¹⁰ = 1116411402697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116411403729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558205701860 + 558205701861.

It is an arithmetic number, because the mean of its divisors is an integer number (558205701861).

Almost surely, 2^{1116411403721} is an apocalyptic number.

It is an amenable number.

1116411403721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116411403721 is an equidigital number, since it uses as much as digits as its factorization.

1116411403721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 1116411403721 its reverse (1273041146111), we get a palindrome (2389452549832).

The spelling of 1116411403721 in words is "one trillion, one hundred sixteen billion, four hundred eleven million, four hundred three thousand, seven hundred twenty-one".