3230121002221 has 2 divisors, whose sum is σ = 3230121002222. Its totient is φ = 3230121002220.

The previous prime is 3230121002191. The next prime is 3230121002257. The reversal of 3230121002221 is 1222001210323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3010263170121 + 219857832100 = 1735011^2 + 468890^2 .

It is an emirp because it is prime and its reverse (1222001210323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3230121002221 - 2¹⁷ = 3230120871149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3230121002291) 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, 1615060501110 + 1615060501111.

It is an arithmetic number, because the mean of its divisors is an integer number (1615060501111).

Almost surely, 2^{3230121002221} is an apocalyptic number.

It is an amenable number.

3230121002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3230121002221 is an equidigital number, since it uses as much as digits as its factorization.

3230121002221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3230121002221 its reverse (1222001210323), we get a palindrome (4452122212544).

The spelling of 3230121002221 in words is "three trillion, two hundred thirty billion, one hundred twenty-one million, two thousand, two hundred twenty-one".