12500121 has 8 divisors (see below), whose sum is σ = 17073504. Its totient is φ = 8130080.

The previous prime is 12500101. The next prime is 12500177. The reversal of 12500121 is 12100521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12500121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12500097 and 12500106.

It is not an unprimeable number, because it can be changed into a prime (12500101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50691 + ... + 50936.

It is an arithmetic number, because the mean of its divisors is an integer number (2134188).

Almost surely, 2^12500121 is an apocalyptic number.

It is an amenable number.

12500121 is a deficient number, since it is larger than the sum of its proper divisors (4573383).

12500121 is a wasteful number, since it uses less digits than its factorization.

12500121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101671.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 12500121 is about 3535.5510178754. The cubic root of 12500121 is about 232.0801905212.

Adding to 12500121 its reverse (12100521), we get a palindrome (24600642).

It can be divided in two parts, 12500 and 121, that added together give a palindrome (12621).

The spelling of 12500121 in words is "twelve million, five hundred thousand, one hundred twenty-one".