188221368118871 has 12 divisors (see below), whose sum is σ = 206402364803232. Its totient is φ = 171040918683264.

The previous prime is 188221368118843. The next prime is 188221368118907. The reversal of 188221368118871 is 178811863122881.

It is not a de Polignac number, because 188221368118871 - 2¹⁰ = 188221368117847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188221368118798 and 188221368118807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188221368112871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6582533375 + ... + 6582561968.

It is an arithmetic number, because the mean of its divisors is an integer number (17200197066936).

Almost surely, 2^{188221368118871} is an apocalyptic number.

188221368118871 is a deficient number, since it is larger than the sum of its proper divisors (18180996684361).

188221368118871 is a wasteful number, since it uses less digits than its factorization.

188221368118871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13165095418 (or 13165095389 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 65.

The spelling of 188221368118871 in words is "one hundred eighty-eight trillion, two hundred twenty-one billion, three hundred sixty-eight million, one hundred eighteen thousand, eight hundred seventy-one".