12621213 has 12 divisors (see below), whose sum is σ = 19888128. Its totient is φ = 7649160.

The previous prime is 12621197. The next prime is 12621241. The reversal of 12621213 is 31212621.

It is not a de Polignac number, because 12621213 - 2⁴ = 12621197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621113) 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 11 ways as a sum of consecutive naturals, for example, 63645 + ... + 63842.

It is an arithmetic number, because the mean of its divisors is an integer number (1657344).

Almost surely, 2^12621213 is an apocalyptic number.

It is an amenable number.

12621213 is a deficient number, since it is larger than the sum of its proper divisors (7266915).

12621213 is a wasteful number, since it uses less digits than its factorization.

12621213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127504 (or 127501 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12621213 is about 3552.6346561390. The cubic root of 12621213 is about 232.8271910883.

Adding to 12621213 its reverse (31212621), we get a palindrome (43833834).

The spelling of 12621213 in words is "twelve million, six hundred twenty-one thousand, two hundred thirteen".