121117225 has 6 divisors (see below), whose sum is σ = 150185390. Its totient is φ = 96893760.

The previous prime is 121117223. The next prime is 121117273. The reversal of 121117225 is 522711121.

It can be written as a sum of positive squares in 3 ways, for example, as 205209 + 120912016 = 453^2 + 10996^2 .

It is not a de Polignac number, because 121117225 - 2¹ = 121117223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121117196 and 121117205.

It is not an unprimeable number, because it can be changed into a prime (121117223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2422320 + ... + 2422369.

Almost surely, 2^121117225 is an apocalyptic number.

It is an amenable number.

121117225 is a deficient number, since it is larger than the sum of its proper divisors (29068165).

121117225 is an equidigital number, since it uses as much as digits as its factorization.

121117225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844699 (or 4844694 counting only the distinct ones).

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

The square root of 121117225 is about 11005.3271191728. The cubic root of 121117225 is about 494.7684186947.

Adding to 121117225 its reverse (522711121), we get a palindrome (643828346).

The spelling of 121117225 in words is "one hundred twenty-one million, one hundred seventeen thousand, two hundred twenty-five".