188712081208201 has 2 divisors, whose sum is σ = 188712081208202. Its totient is φ = 188712081208200.

The previous prime is 188712081208187. The next prime is 188712081208237. The reversal of 188712081208201 is 102802180217881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188697586252176 + 14494956025 = 13736724^2 + 120395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188712081208201 is a prime.

It is a super-2 number, since 2×188712081208201² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (188712081208241) 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, 94356040604100 + 94356040604101.

It is an arithmetic number, because the mean of its divisors is an integer number (94356040604101).

Almost surely, 2^{188712081208201} is an apocalyptic number.

It is an amenable number.

188712081208201 is a deficient number, since it is larger than the sum of its proper divisors (1).

188712081208201 is an equidigital number, since it uses as much as digits as its factorization.

188712081208201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229376, while the sum is 49.

The spelling of 188712081208201 in words is "one hundred eighty-eight trillion, seven hundred twelve billion, eighty-one million, two hundred eight thousand, two hundred one".