12601021 has 8 divisors (see below), whose sum is σ = 12998304. Its totient is φ = 12208560.

The previous prime is 12601013. The next prime is 12601027. The reversal of 12601021 is 12010621.

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

It is not a de Polignac number, because 12601021 - 2³ = 12601013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12600992 and 12601010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12601027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4515 + ... + 6751.

It is an arithmetic number, because the mean of its divisors is an integer number (1624788).

Almost surely, 2^12601021 is an apocalyptic number.

It is an amenable number.

12601021 is a deficient number, since it is larger than the sum of its proper divisors (397283).

12601021 is a wasteful number, since it uses less digits than its factorization.

12601021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 12601021 is about 3549.7916840288. The cubic root of 12601021 is about 232.7029622480.

Adding to 12601021 its reverse (12010621), we get a palindrome (24611642).

The spelling of 12601021 in words is "twelve million, six hundred one thousand, twenty-one".