1243004211329 has 2 divisors, whose sum is σ = 1243004211330. Its totient is φ = 1243004211328.

The previous prime is 1243004211221. The next prime is 1243004211341. The reversal of 1243004211329 is 9231124003421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755946780304 + 487057431025 = 869452^2 + 697895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243004211329 - 2³⁶ = 1174284734593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243004211295 and 1243004211304.

It is not a weakly prime, because it can be changed into another prime (1243004211629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621502105664 + 621502105665.

It is an arithmetic number, because the mean of its divisors is an integer number (621502105665).

Almost surely, 2^{1243004211329} is an apocalyptic number.

It is an amenable number.

1243004211329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243004211329 is an equidigital number, since it uses as much as digits as its factorization.

1243004211329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 1243004211329 in words is "one trillion, two hundred forty-three billion, four million, two hundred eleven thousand, three hundred twenty-nine".