12211220202829 has 2 divisors, whose sum is σ = 12211220202830. Its totient is φ = 12211220202828.

The previous prime is 12211220202827. The next prime is 12211220202871. The reversal of 12211220202829 is 92820202211221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8754231150025 + 3456989052804 = 2958755^2 + 1859298^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211220202829 - 2¹ = 12211220202827 is a prime.

It is a super-2 number, since 2×12211220202829² (a number of 27 digits) contains 22 as substring.

Together with 12211220202827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12211220202794 and 12211220202803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211220202823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105610101414 + 6105610101415.

It is an arithmetic number, because the mean of its divisors is an integer number (6105610101415).

Almost surely, 2^{12211220202829} is an apocalyptic number.

It is an amenable number.

12211220202829 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211220202829 is an equidigital number, since it uses as much as digits as its factorization.

12211220202829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 12211220202829 in words is "twelve trillion, two hundred eleven billion, two hundred twenty million, two hundred two thousand, eight hundred twenty-nine".