12501021 has 8 divisors (see below), whose sum is σ = 17950240. Its totient is φ = 7692912.

The previous prime is 12501019. The next prime is 12501043. The reversal of 12501021 is 12010521.

12501021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12501021 - 2¹ = 12501019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12500988 and 12501006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501721) 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, 160231 + ... + 160308.

It is an arithmetic number, because the mean of its divisors is an integer number (2243780).

Almost surely, 2^12501021 is an apocalyptic number.

It is an amenable number.

12501021 is a deficient number, since it is larger than the sum of its proper divisors (5449219).

12501021 is a wasteful number, since it uses less digits than its factorization.

12501021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320555.

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

The square root of 12501021 is about 3535.6782941891. The cubic root of 12501021 is about 232.0857602582.

Adding to 12501021 its reverse (12010521), we get a palindrome (24511542).

The spelling of 12501021 in words is "twelve million, five hundred one thousand, twenty-one".