12621212 has 6 divisors (see below), whose sum is σ = 22087128. Its totient is φ = 6310604.

The previous prime is 12621197. The next prime is 12621241. The reversal of 12621212 is 21212621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577648 + ... + 1577655.

It is an arithmetic number, because the mean of its divisors is an integer number (3681188).

Almost surely, 2^12621212 is an apocalyptic number.

It is an amenable number.

12621212 is a deficient number, since it is larger than the sum of its proper divisors (9465916).

12621212 is a wasteful number, since it uses less digits than its factorization.

12621212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155307 (or 3155305 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 12621212 is about 3552.6345153984. The cubic root of 12621212 is about 232.8271849392.

Adding to 12621212 its reverse (21212621), we get a palindrome (33833833).

The spelling of 12621212 in words is "twelve million, six hundred twenty-one thousand, two hundred twelve".