188301121 has 2 divisors, whose sum is σ = 188301122. Its totient is φ = 188301120.

The previous prime is 188301119. The next prime is 188301131. The reversal of 188301121 is 121103881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101606400 + 86694721 = 10080^2 + 9311^2 .

It is an emirp because it is prime and its reverse (121103881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188301121 - 2¹ = 188301119 is a prime.

Together with 188301119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (188301131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94150560 + 94150561.

It is an arithmetic number, because the mean of its divisors is an integer number (94150561).

Almost surely, 2^188301121 is an apocalyptic number.

It is an amenable number.

188301121 is a deficient number, since it is larger than the sum of its proper divisors (1).

188301121 is an equidigital number, since it uses as much as digits as its factorization.

188301121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 188301121 is about 13722.2855603576. The cubic root of 188301121 is about 573.1711227230.

The spelling of 188301121 in words is "one hundred eighty-eight million, three hundred one thousand, one hundred twenty-one".