121713225 has 24 divisors (see below), whose sum is σ = 201555552. Its totient is φ = 64809600.

The previous prime is 121713209. The next prime is 121713227. The reversal of 121713225 is 522317121.

It is not a de Polignac number, because 121713225 - 2⁴ = 121713209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121713195 and 121713204.

It is not an unprimeable number, because it can be changed into a prime (121713227) 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 23 ways as a sum of consecutive naturals, for example, 76690 + ... + 78260.

It is an arithmetic number, because the mean of its divisors is an integer number (8398148).

Almost surely, 2^121713225 is an apocalyptic number.

121713225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121713225 is a deficient number, since it is larger than the sum of its proper divisors (79842327).

121713225 is a wasteful number, since it uses less digits than its factorization.

121713225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617 (or 2612 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 121713225 is about 11032.3716851817. The cubic root of 121713225 is about 495.5786519358.

The spelling of 121713225 in words is "one hundred twenty-one million, seven hundred thirteen thousand, two hundred twenty-five".