233311222021 has 2 divisors, whose sum is σ = 233311222022. Its totient is φ = 233311222020.

The previous prime is 233311222009. The next prime is 233311222073. The reversal of 233311222021 is 120222113332.

233311222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143379609025 + 89931612996 = 378655^2 + 299886^2 .

It is a cyclic number.

It is not a de Polignac number, because 233311222021 - 2⁷ = 233311221893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233311221983 and 233311222001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233311223021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116655611010 + 116655611011.

It is an arithmetic number, because the mean of its divisors is an integer number (116655611011).

Almost surely, 2^233311222021 is an apocalyptic number.

It is an amenable number.

233311222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233311222021 is an equidigital number, since it uses as much as digits as its factorization.

233311222021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 233311222021 its reverse (120222113332), we get a palindrome (353533335353).

The spelling of 233311222021 in words is "two hundred thirty-three billion, three hundred eleven million, two hundred twenty-two thousand, twenty-one".