11531065642211 has 2 divisors, whose sum is σ = 11531065642212. Its totient is φ = 11531065642210.

The previous prime is 11531065642121. The next prime is 11531065642279. The reversal of 11531065642211 is 11224656013511.

Together with previous prime (11531065642121) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11531065642211 - 2¹⁸ = 11531065380067 is a prime.

It is not a weakly prime, because it can be changed into another prime (11531065242211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765532821105 + 5765532821106.

It is an arithmetic number, because the mean of its divisors is an integer number (5765532821106).

Almost surely, 2^{11531065642211} is an apocalyptic number.

11531065642211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531065642211 is an equidigital number, since it uses as much as digits as its factorization.

11531065642211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 11531065642211 in words is "eleven trillion, five hundred thirty-one billion, sixty-five million, six hundred forty-two thousand, two hundred eleven".