221012320033 has 2 divisors, whose sum is σ = 221012320034. Its totient is φ = 221012320032.

The previous prime is 221012320013. The next prime is 221012320073. The reversal of 221012320033 is 330023210122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180937084689 + 40075235344 = 425367^2 + 200188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221012320033 is a prime.

It is not a weakly prime, because it can be changed into another prime (221012320013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506160016 + 110506160017.

It is an arithmetic number, because the mean of its divisors is an integer number (110506160017).

Almost surely, 2^221012320033 is an apocalyptic number.

It is an amenable number.

221012320033 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012320033 is an equidigital number, since it uses as much as digits as its factorization.

221012320033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221012320033 its reverse (330023210122), we get a palindrome (551035530155).

The spelling of 221012320033 in words is "two hundred twenty-one billion, twelve million, three hundred twenty thousand, thirty-three".