121113225 has 30 divisors (see below), whose sum is σ = 224347310. Its totient is φ = 64592640.

The previous prime is 121113217. The next prime is 121113227. The reversal of 121113225 is 522311121.

It can be written as a sum of positive squares in 3 ways, for example, as 22924944 + 98188281 = 4788^2 + 9909^2 .

It is not a de Polignac number, because 121113225 - 2³ = 121113217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121113198 and 121113207.

It is not an unprimeable number, because it can be changed into a prime (121113227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 27880 + ... + 31929.

Almost surely, 2^121113225 is an apocalyptic number.

121113225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121113225 is a deficient number, since it is larger than the sum of its proper divisors (103234085).

121113225 is an equidigital number, since it uses as much as digits as its factorization.

121113225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59831 (or 59817 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121113225 is about 11005.1453874994. The cubic root of 121113225 is about 494.7629719179.

Adding to 121113225 its reverse (522311121), we get a palindrome (643424346).

The spelling of 121113225 in words is "one hundred twenty-one million, one hundred thirteen thousand, two hundred twenty-five".