4233221310221 has 2 divisors, whose sum is σ = 4233221310222. Its totient is φ = 4233221310220.

The previous prime is 4233221310217. The next prime is 4233221310223. The reversal of 4233221310221 is 1220131223324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4009245336100 + 223975974121 = 2002310^2 + 473261^2 .

It is a cyclic number.

It is not a de Polignac number, because 4233221310221 - 2² = 4233221310217 is a prime.

It is a super-2 number, since 2×4233221310221² (a number of 26 digits) contains 22 as substring.

Together with 4233221310223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4233221310223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2116610655110 + 2116610655111.

It is an arithmetic number, because the mean of its divisors is an integer number (2116610655111).

Almost surely, 2^{4233221310221} is an apocalyptic number.

It is an amenable number.

4233221310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4233221310221 is an equidigital number, since it uses as much as digits as its factorization.

4233221310221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 4233221310221 its reverse (1220131223324), we get a palindrome (5453352533545).

The spelling of 4233221310221 in words is "four trillion, two hundred thirty-three billion, two hundred twenty-one million, three hundred ten thousand, two hundred twenty-one".