12212899 has 2 divisors, whose sum is σ = 12212900. Its totient is φ = 12212898.

The previous prime is 12212887. The next prime is 12212917. The reversal of 12212899 is 99821221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212899 - 2⁵ = 12212867 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106449 + 6106450.

It is an arithmetic number, because the mean of its divisors is an integer number (6106450).

Almost surely, 2^12212899 is an apocalyptic number.

12212899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212899 is an equidigital number, since it uses as much as digits as its factorization.

12212899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 12212899 is about 3494.6958379808. The cubic root of 12212899 is about 230.2888557274.

The spelling of 12212899 in words is "twelve million, two hundred twelve thousand, eight hundred ninety-nine".