12213223129 has 2 divisors, whose sum is σ = 12213223130. Its totient is φ = 12213223128.

The previous prime is 12213223111. The next prime is 12213223177. The reversal of 12213223129 is 92132231221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12176681104 + 36542025 = 110348^2 + 6045^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213223129 - 2¹⁷ = 12213092057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12213223097 and 12213223106.

It is not a weakly prime, because it can be changed into another prime (12213223829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106611564 + 6106611565.

It is an arithmetic number, because the mean of its divisors is an integer number (6106611565).

Almost surely, 2^12213223129 is an apocalyptic number.

It is an amenable number.

12213223129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213223129 is an equidigital number, since it uses as much as digits as its factorization.

12213223129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The spelling of 12213223129 in words is "twelve billion, two hundred thirteen million, two hundred twenty-three thousand, one hundred twenty-nine".