118567231211521 has 2 divisors, whose sum is σ = 118567231211522. Its totient is φ = 118567231211520.

The previous prime is 118567231211503. The next prime is 118567231211587. The reversal of 118567231211521 is 125112132765811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96223543609600 + 22343687601921 = 9809360^2 + 4726911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118567231211521 is a prime.

It is not a weakly prime, because it can be changed into another prime (118567231218521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59283615605760 + 59283615605761.

It is an arithmetic number, because the mean of its divisors is an integer number (59283615605761).

Almost surely, 2^{118567231211521} is an apocalyptic number.

It is an amenable number.

118567231211521 is a deficient number, since it is larger than the sum of its proper divisors (1).

118567231211521 is an equidigital number, since it uses as much as digits as its factorization.

118567231211521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 46.

The spelling of 118567231211521 in words is "one hundred eighteen trillion, five hundred sixty-seven billion, two hundred thirty-one million, two hundred eleven thousand, five hundred twenty-one".