159850121 has 2 divisors, whose sum is σ = 159850122. Its totient is φ = 159850120.

The previous prime is 159850087. The next prime is 159850123. The reversal of 159850121 is 121058951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 33512521 = 11240^2 + 5789^2 .

It is a cyclic number.

It is not a de Polignac number, because 159850121 - 2¹⁸ = 159587977 is a prime.

It is a super-2 number, since 2×159850121² = 51104122367429282, which contains 22 as substring.

Together with 159850123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159850123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79925060 + 79925061.

It is an arithmetic number, because the mean of its divisors is an integer number (79925061).

Almost surely, 2^159850121 is an apocalyptic number.

It is an amenable number.

159850121 is a deficient number, since it is larger than the sum of its proper divisors (1).

159850121 is an equidigital number, since it uses as much as digits as its factorization.

159850121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 159850121 is about 12643.1847649237. The cubic root of 159850121 is about 542.7139561118.

The spelling of 159850121 in words is "one hundred fifty-nine million, eight hundred fifty thousand, one hundred twenty-one".