121522125 has 32 divisors (see below), whose sum is σ = 202924800. Its totient is φ = 64584000.

The previous prime is 121522061. The next prime is 121522129. The reversal of 121522125 is 521225121.

It is not a de Polignac number, because 121522125 - 2⁶ = 121522061 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121522129) 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 31 ways as a sum of consecutive naturals, for example, 202576 + ... + 203174.

It is an arithmetic number, because the mean of its divisors is an integer number (6341400).

Almost surely, 2^121522125 is an apocalyptic number.

121522125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121522125 is a deficient number, since it is larger than the sum of its proper divisors (81402675).

121522125 is an equidigital number, since it uses as much as digits as its factorization.

121522125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1148 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 121522125 is about 11023.7074072201. The cubic root of 121522125 is about 495.3191493533.

Adding to 121522125 its reverse (521225121), we get a palindrome (642747246).

The spelling of 121522125 in words is "one hundred twenty-one million, five hundred twenty-two thousand, one hundred twenty-five".