12212929 has 2 divisors, whose sum is σ = 12212930. Its totient is φ = 12212928.

The previous prime is 12212917. The next prime is 12212933. The reversal of 12212929 is 92921221.

12212929 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 can be written as a sum of positive squares in only one way, i.e., 7969329 + 4243600 = 2823^2 + 2060^2 .

It is an emirp because it is prime and its reverse (92921221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212929 - 2¹¹ = 12210881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212897 and 12212906.

It is not a weakly prime, because it can be changed into another prime (12212939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106464 + 6106465.

It is an arithmetic number, because the mean of its divisors is an integer number (6106465).

Almost surely, 2^12212929 is an apocalyptic number.

It is an amenable number.

12212929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212929 is an equidigital number, since it uses as much as digits as its factorization.

12212929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 12212929 is about 3494.7001301972. The cubic root of 12212929 is about 230.2890442892.

The spelling of 12212929 in words is "twelve million, two hundred twelve thousand, nine hundred twenty-nine".