125113121 has 12 divisors (see below), whose sum is σ = 147298032. Its totient is φ = 105944328.

The previous prime is 125113111. The next prime is 125113129. The reversal of 125113121 is 121311521.

It is a de Polignac number, because none of the positive numbers 2^k-125113121 is a prime.

It is a super-3 number, since 3×125113121³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125113121.

It is not an unprimeable number, because it can be changed into a prime (125113129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11315 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (12274836).

Almost surely, 2^125113121 is an apocalyptic number.

It is an amenable number.

125113121 is a deficient number, since it is larger than the sum of its proper divisors (22184911).

125113121 is an equidigital number, since it uses as much as digits as its factorization.

125113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860 (or 30853 counting only the distinct ones).

The product of its digits is 60, while the sum is 17.

The square root of 125113121 is about 11185.3976683889. The cubic root of 125113121 is about 500.1507825247.

Adding to 125113121 its reverse (121311521), we get a palindrome (246424642).

The spelling of 125113121 in words is "one hundred twenty-five million, one hundred thirteen thousand, one hundred twenty-one".