21203064411233 has 2 divisors, whose sum is σ = 21203064411234. Its totient is φ = 21203064411232.

The previous prime is 21203064411211. The next prime is 21203064411247. The reversal of 21203064411233 is 33211446030212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14608815333904 + 6594249077329 = 3822148^2 + 2567927^2 .

It is a cyclic number.

It is not a de Polignac number, because 21203064411233 - 2⁸ = 21203064410977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21203064411233.

It is not a weakly prime, because it can be changed into another prime (21203064411733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601532205616 + 10601532205617.

It is an arithmetic number, because the mean of its divisors is an integer number (10601532205617).

Almost surely, 2^{21203064411233} is an apocalyptic number.

It is an amenable number.

21203064411233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203064411233 is an equidigital number, since it uses as much as digits as its factorization.

21203064411233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 21203064411233 in words is "twenty-one trillion, two hundred three billion, sixty-four million, four hundred eleven thousand, two hundred thirty-three".