1223211302329 has 2 divisors, whose sum is σ = 1223211302330. Its totient is φ = 1223211302328.

The previous prime is 1223211302321. The next prime is 1223211302347. The reversal of 1223211302329 is 9232031123221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149687895225 + 73523407104 = 1072235^2 + 271152^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223211302329 - 2³ = 1223211302321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223211302329.

It is not a weakly prime, because it can be changed into another prime (1223211302321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611605651164 + 611605651165.

It is an arithmetic number, because the mean of its divisors is an integer number (611605651165).

Almost surely, 2^{1223211302329} is an apocalyptic number.

It is an amenable number.

1223211302329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223211302329 is an equidigital number, since it uses as much as digits as its factorization.

1223211302329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 1223211302329 in words is "one trillion, two hundred twenty-three billion, two hundred eleven million, three hundred two thousand, three hundred twenty-nine".