12935021 has 12 divisors (see below), whose sum is σ = 14493276. Its totient is φ = 11531520.

The previous prime is 12935017. The next prime is 12935051. The reversal of 12935021 is 12053921.

It can be written as a sum of positive squares in 2 ways, for example, as 10176100 + 2758921 = 3190^2 + 1661^2 .

It is not a de Polignac number, because 12935021 - 2² = 12935017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12935051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5405 + ... + 7421.

It is an arithmetic number, because the mean of its divisors is an integer number (1207773).

Almost surely, 2^12935021 is an apocalyptic number.

12935021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12935021 is a deficient number, since it is larger than the sum of its proper divisors (1558255).

12935021 is a wasteful number, since it uses less digits than its factorization.

12935021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12935021 is about 3596.5290211536. The cubic root of 12935021 is about 234.7410517226.

Adding to 12935021 its reverse (12053921), we get a palindrome (24988942).

The spelling of 12935021 in words is "twelve million, nine hundred thirty-five thousand, twenty-one".