8171404121 has 2 divisors, whose sum is σ = 8171404122. Its totient is φ = 8171404120.

The previous prime is 8171404069. The next prime is 8171404133. The reversal of 8171404121 is 1214041718.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5106674521 + 3064729600 = 71461^2 + 55360^2 .

It is a cyclic number.

It is not a de Polignac number, because 8171404121 - 2¹⁸ = 8171141977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8171404151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085702060 + 4085702061.

It is an arithmetic number, because the mean of its divisors is an integer number (4085702061).

Almost surely, 2^8171404121 is an apocalyptic number.

It is an amenable number.

8171404121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8171404121 is an equidigital number, since it uses as much as digits as its factorization.

8171404121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 8171404121 is about 90395.8191566402. The cubic root of 8171404121 is about 2014.1828622152.

Adding to 8171404121 its reverse (1214041718), we get a palindrome (9385445839).

The spelling of 8171404121 in words is "eight billion, one hundred seventy-one million, four hundred four thousand, one hundred twenty-one".