21032312233 has 2 divisors, whose sum is σ = 21032312234. Its totient is φ = 21032312232.

The previous prime is 21032312201. The next prime is 21032312239. The reversal of 21032312233 is 33221323012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20750978704 + 281333529 = 144052^2 + 16773^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032312233 - 2⁵ = 21032312201 is a prime.

It is not a weakly prime, because it can be changed into another prime (21032312239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516156116 + 10516156117.

It is an arithmetic number, because the mean of its divisors is an integer number (10516156117).

Almost surely, 2^21032312233 is an apocalyptic number.

It is an amenable number.

21032312233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032312233 is an equidigital number, since it uses as much as digits as its factorization.

21032312233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21032312233 its reverse (33221323012), we get a palindrome (54253635245).

The spelling of 21032312233 in words is "twenty-one billion, thirty-two million, three hundred twelve thousand, two hundred thirty-three".