1131163332521 has 2 divisors, whose sum is σ = 1131163332522. Its totient is φ = 1131163332520.

The previous prime is 1131163332499. The next prime is 1131163332569. The reversal of 1131163332521 is 1252333611311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1095664627600 + 35498704921 = 1046740^2 + 188411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131163332521 - 2⁶ = 1131163332457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131163332581) 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 as a sum of consecutive naturals, namely, 565581666260 + 565581666261.

It is an arithmetic number, because the mean of its divisors is an integer number (565581666261).

Almost surely, 2^{1131163332521} is an apocalyptic number.

It is an amenable number.

1131163332521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131163332521 is an equidigital number, since it uses as much as digits as its factorization.

1131163332521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

Adding to 1131163332521 its reverse (1252333611311), we get a palindrome (2383496943832).

The spelling of 1131163332521 in words is "one trillion, one hundred thirty-one billion, one hundred sixty-three million, three hundred thirty-two thousand, five hundred twenty-one".