21212233202233 has 2 divisors, whose sum is σ = 21212233202234. Its totient is φ = 21212233202232.

The previous prime is 21212233202201. The next prime is 21212233202243. The reversal of 21212233202233 is 33220233221212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14942152098064 + 6270081104169 = 3865508^2 + 2504013^2 .

It is a cyclic number.

It is not a de Polignac number, because 21212233202233 - 2⁵ = 21212233202201 is a prime.

It is not a weakly prime, because it can be changed into another prime (21212233202243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606116601116 + 10606116601117.

It is an arithmetic number, because the mean of its divisors is an integer number (10606116601117).

Almost surely, 2^{21212233202233} is an apocalyptic number.

It is an amenable number.

21212233202233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212233202233 is an equidigital number, since it uses as much as digits as its factorization.

21212233202233 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 28.

Adding to 21212233202233 its reverse (33220233221212), we get a palindrome (54432466423445).

The spelling of 21212233202233 in words is "twenty-one trillion, two hundred twelve billion, two hundred thirty-three million, two hundred two thousand, two hundred thirty-three".