188052121 has 2 divisors, whose sum is σ = 188052122. Its totient is φ = 188052120.

The previous prime is 188052097. The next prime is 188052133. The reversal of 188052121 is 121250881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178596496 + 9455625 = 13364^2 + 3075^2 .

It is an emirp because it is prime and its reverse (121250881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188052121 - 2⁵ = 188052089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188052121.

It is not a weakly prime, because it can be changed into another prime (188052191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94026060 + 94026061.

It is an arithmetic number, because the mean of its divisors is an integer number (94026061).

Almost surely, 2^188052121 is an apocalyptic number.

It is an amenable number.

188052121 is a deficient number, since it is larger than the sum of its proper divisors (1).

188052121 is an equidigital number, since it uses as much as digits as its factorization.

188052121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 188052121 is about 13713.2097263916. The cubic root of 188052121 is about 572.9183669888.

The spelling of 188052121 in words is "one hundred eighty-eight million, fifty-two thousand, one hundred twenty-one".