12621299 has 2 divisors, whose sum is σ = 12621300. Its totient is φ = 12621298.

The previous prime is 12621289. The next prime is 12621307. The reversal of 12621299 is 99212621.

12621299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12621299 - 2¹² = 12617203 is a prime.

It is not a weakly prime, because it can be changed into another prime (12621269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6310649 + 6310650.

It is an arithmetic number, because the mean of its divisors is an integer number (6310650).

Almost surely, 2^12621299 is an apocalyptic number.

12621299 is a deficient number, since it is larger than the sum of its proper divisors (1).

12621299 is an equidigital number, since it uses as much as digits as its factorization.

12621299 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 12621299 is about 3552.6467598116. The cubic root of 12621299 is about 232.8277199095.

The spelling of 12621299 in words is "twelve million, six hundred twenty-one thousand, two hundred ninety-nine".