121411161 has 12 divisors (see below), whose sum is σ = 185687892. Its totient is φ = 76179456.

The previous prime is 121411153. The next prime is 121411163. The reversal of 121411161 is 161114121.

It can be written as a sum of positive squares in 2 ways, for example, as 50851161 + 70560000 = 7131^2 + 8400^2 .

It is not a de Polignac number, because 121411161 - 2³ = 121411153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121411163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396616 + ... + 396921.

It is an arithmetic number, because the mean of its divisors is an integer number (15473991).

Almost surely, 2^121411161 is an apocalyptic number.

It is an amenable number.

121411161 is a deficient number, since it is larger than the sum of its proper divisors (64276731).

121411161 is a wasteful number, since it uses less digits than its factorization.

121411161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793560 (or 793557 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 121411161 is about 11018.6732867437. The cubic root of 121411161 is about 495.1683418860.

Adding to 121411161 its reverse (161114121), we get a palindrome (282525282).

The spelling of 121411161 in words is "one hundred twenty-one million, four hundred eleven thousand, one hundred sixty-one".