121601171 has 2 divisors, whose sum is σ = 121601172. Its totient is φ = 121601170.

The previous prime is 121601167. The next prime is 121601177. The reversal of 121601171 is 171106121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121601171 - 2² = 121601167 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121601177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60800585 + 60800586.

It is an arithmetic number, because the mean of its divisors is an integer number (60800586).

Almost surely, 2^121601171 is an apocalyptic number.

121601171 is a deficient number, since it is larger than the sum of its proper divisors (1).

121601171 is an equidigital number, since it uses as much as digits as its factorization.

121601171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 121601171 is about 11027.2920973374. The cubic root of 121601171 is about 495.4265221501.

Adding to 121601171 its reverse (171106121), we get a palindrome (292707292).

It can be divided in two parts, 12160 and 1171, that added together give a palindrome (13331).

The spelling of 121601171 in words is "one hundred twenty-one million, six hundred one thousand, one hundred seventy-one".