3201233111221 has 2 divisors, whose sum is σ = 3201233111222. Its totient is φ = 3201233111220.

The previous prime is 3201233111203. The next prime is 3201233111231. The reversal of 3201233111221 is 1221113321023.

3201233111221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2467692250321 + 733540860900 = 1570889^2 + 856470^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201233111221 - 2⁵ = 3201233111189 is a prime.

It is a super-2 number, since 2×3201233111221² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3201233111192 and 3201233111201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3201233111231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600616555610 + 1600616555611.

It is an arithmetic number, because the mean of its divisors is an integer number (1600616555611).

Almost surely, 2^{3201233111221} is an apocalyptic number.

It is an amenable number.

3201233111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3201233111221 is an equidigital number, since it uses as much as digits as its factorization.

3201233111221 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 22.

Adding to 3201233111221 its reverse (1221113321023), we get a palindrome (4422346432244).

The spelling of 3201233111221 in words is "three trillion, two hundred one billion, two hundred thirty-three million, one hundred eleven thousand, two hundred twenty-one".