120901090171 has 2 divisors, whose sum is σ = 120901090172. Its totient is φ = 120901090170.

The previous prime is 120901090159. The next prime is 120901090181. The reversal of 120901090171 is 171090109021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120901090171 - 2⁵ = 120901090139 is a prime.

It is not a weakly prime, because it can be changed into another prime (120901090181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60450545085 + 60450545086.

It is an arithmetic number, because the mean of its divisors is an integer number (60450545086).

Almost surely, 2^120901090171 is an apocalyptic number.

120901090171 is a deficient number, since it is larger than the sum of its proper divisors (1).

120901090171 is an equidigital number, since it uses as much as digits as its factorization.

120901090171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

Adding to 120901090171 its reverse (171090109021), we get a palindrome (291991199192).

The spelling of 120901090171 in words is "one hundred twenty billion, nine hundred one million, ninety thousand, one hundred seventy-one".