121045171 has 4 divisors (see below), whose sum is σ = 130356352. Its totient is φ = 111733992.

The previous prime is 121045157. The next prime is 121045189. The reversal of 121045171 is 171540121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121045171 - 2⁵ = 121045139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121045121) 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 in 3 ways as a sum of consecutive naturals, for example, 4655571 + ... + 4655596.

It is an arithmetic number, because the mean of its divisors is an integer number (32589088).

Almost surely, 2^121045171 is an apocalyptic number.

121045171 is a deficient number, since it is larger than the sum of its proper divisors (9311181).

121045171 is an equidigital number, since it uses as much as digits as its factorization.

121045171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311180.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 121045171 is about 11002.0530356838. The cubic root of 121045171 is about 494.6702847986.

Adding to 121045171 its reverse (171540121), we get a palindrome (292585292).

The spelling of 121045171 in words is "one hundred twenty-one million, forty-five thousand, one hundred seventy-one".