121117825 has 12 divisors (see below), whose sum is σ = 153383040. Its totient is φ = 94831760.

The previous prime is 121117811. The next prime is 121117831. The reversal of 121117825 is 528711121.

It is not a de Polignac number, because 121117825 - 2¹⁹ = 120593537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121117793 and 121117802.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 50365 + ... + 52714.

It is an arithmetic number, because the mean of its divisors is an integer number (12781920).

Almost surely, 2^121117825 is an apocalyptic number.

It is an amenable number.

121117825 is a deficient number, since it is larger than the sum of its proper divisors (32265215).

121117825 is a wasteful number, since it uses less digits than its factorization.

121117825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103136 (or 103131 counting only the distinct ones).

The product of its digits is 1120, while the sum is 28.

The square root of 121117825 is about 11005.3543786650. The cubic root of 121117825 is about 494.7692357009.

Adding to 121117825 its reverse (528711121), we get a palindrome (649828946).

The spelling of 121117825 in words is "one hundred twenty-one million, one hundred seventeen thousand, eight hundred twenty-five".