1223331000643 has 2 divisors, whose sum is σ = 1223331000644. Its totient is φ = 1223331000642.

The previous prime is 1223331000607. The next prime is 1223331000653. The reversal of 1223331000643 is 3460001333221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223331000643 - 2²⁹ = 1222794129731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223331000653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611665500321 + 611665500322.

It is an arithmetic number, because the mean of its divisors is an integer number (611665500322).

Almost surely, 2^{1223331000643} is an apocalyptic number.

1223331000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223331000643 is an equidigital number, since it uses as much as digits as its factorization.

1223331000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1223331000643 its reverse (3460001333221), we get a palindrome (4683332333864).

The spelling of 1223331000643 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-one million, six hundred forty-three", and thus it is an aban number.