188212281247 has 2 divisors, whose sum is σ = 188212281248. Its totient is φ = 188212281246.

The previous prime is 188212281221. The next prime is 188212281259. The reversal of 188212281247 is 742182212881.

It is a strong prime.

It is an emirp because it is prime and its reverse (742182212881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188212281247 - 2⁷ = 188212281119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188212281197 and 188212281206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188212287247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94106140623 + 94106140624.

It is an arithmetic number, because the mean of its divisors is an integer number (94106140624).

Almost surely, 2^188212281247 is an apocalyptic number.

188212281247 is a deficient number, since it is larger than the sum of its proper divisors (1).

188212281247 is an equidigital number, since it uses as much as digits as its factorization.

188212281247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 46.

The spelling of 188212281247 in words is "one hundred eighty-eight billion, two hundred twelve million, two hundred eighty-one thousand, two hundred forty-seven".