121525113 has 4 divisors (see below), whose sum is σ = 162033488. Its totient is φ = 81016740.

The previous prime is 121525093. The next prime is 121525133. The reversal of 121525113 is 311525121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (121525093) and next prime (121525133).

It is not a de Polignac number, because 121525113 - 2⁶ = 121525049 is a prime.

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 121525113.

It is not an unprimeable number, because it can be changed into a prime (121525133) 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 3 ways as a sum of consecutive naturals, for example, 20254183 + ... + 20254188.

It is an arithmetic number, because the mean of its divisors is an integer number (40508372).

Almost surely, 2^121525113 is an apocalyptic number.

It is an amenable number.

121525113 is a deficient number, since it is larger than the sum of its proper divisors (40508375).

121525113 is an equidigital number, since it uses as much as digits as its factorization.

121525113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40508374.

The product of its digits is 300, while the sum is 21.

The square root of 121525113 is about 11023.8429324805. The cubic root of 121525113 is about 495.3232089748.

The spelling of 121525113 in words is "one hundred twenty-one million, five hundred twenty-five thousand, one hundred thirteen".