4241233221221 has 2 divisors, whose sum is σ = 4241233221222. Its totient is φ = 4241233221220.

The previous prime is 4241233221217. The next prime is 4241233221241. The reversal of 4241233221221 is 1221223321424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3056098348900 + 1185134872321 = 1748170^2 + 1088639^2 .

It is a cyclic number.

It is not a de Polignac number, because 4241233221221 - 2² = 4241233221217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4241233221241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120616610610 + 2120616610611.

It is an arithmetic number, because the mean of its divisors is an integer number (2120616610611).

Almost surely, 2^{4241233221221} is an apocalyptic number.

It is an amenable number.

4241233221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4241233221221 is an equidigital number, since it uses as much as digits as its factorization.

4241233221221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 29.

Adding to 4241233221221 its reverse (1221223321424), we get a palindrome (5462456542645).

The spelling of 4241233221221 in words is "four trillion, two hundred forty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-one".