12992621 has 2 divisors, whose sum is σ = 12992622. Its totient is φ = 12992620.

The previous prime is 12992611. The next prime is 12992653. The reversal of 12992621 is 12629921.

12992621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12992653) can be obtained adding 12992621 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 133225 = 3586^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 12992621 - 2¹⁴ = 12976237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12992611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496310 + 6496311.

It is an arithmetic number, because the mean of its divisors is an integer number (6496311).

Almost surely, 2^12992621 is an apocalyptic number.

It is an amenable number.

12992621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12992621 is an equidigital number, since it uses as much as digits as its factorization.

12992621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 12992621 is about 3604.5278470280. The cubic root of 12992621 is about 235.0889718939.

The spelling of 12992621 in words is "twelve million, nine hundred ninety-two thousand, six hundred twenty-one".