16121330171 has 2 divisors, whose sum is σ = 16121330172. Its totient is φ = 16121330170.

The previous prime is 16121330167. The next prime is 16121330189. The reversal of 16121330171 is 17103312161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16121330171 - 2² = 16121330167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16121330171.

It is not a weakly prime, because it can be changed into another prime (16121330671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060665085 + 8060665086.

It is an arithmetic number, because the mean of its divisors is an integer number (8060665086).

Almost surely, 2^16121330171 is an apocalyptic number.

16121330171 is a deficient number, since it is larger than the sum of its proper divisors (1).

16121330171 is an equidigital number, since it uses as much as digits as its factorization.

16121330171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 16121330171 in words is "sixteen billion, one hundred twenty-one million, three hundred thirty thousand, one hundred seventy-one".