121324525 has 12 divisors (see below), whose sum is σ = 171934432. Its totient is φ = 83193840.

The previous prime is 121324523. The next prime is 121324559. The reversal of 121324525 is 525423121.

It is not a de Polignac number, because 121324525 - 2¹ = 121324523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121324525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346467 + ... + 346816.

Almost surely, 2^121324525 is an apocalyptic number.

It is an amenable number.

121324525 is a deficient number, since it is larger than the sum of its proper divisors (50609907).

121324525 is an equidigital number, since it uses as much as digits as its factorization.

121324525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693300 (or 693295 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 121324525 is about 11014.7412588767. The cubic root of 121324525 is about 495.0505339015.

Adding to 121324525 its reverse (525423121), we get a palindrome (646747646).

The spelling of 121324525 in words is "one hundred twenty-one million, three hundred twenty-four thousand, five hundred twenty-five".