4341232121221 has 2 divisors, whose sum is σ = 4341232121222. Its totient is φ = 4341232121220.

The previous prime is 4341232121207. The next prime is 4341232121287. The reversal of 4341232121221 is 1221212321434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3892673756196 + 448558365025 = 1972986^2 + 669745^2 .

It is a cyclic number.

It is not a de Polignac number, because 4341232121221 - 2¹¹ = 4341232119173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4341232121221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4341232121321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2170616060610 + 2170616060611.

It is an arithmetic number, because the mean of its divisors is an integer number (2170616060611).

Almost surely, 2^{4341232121221} is an apocalyptic number.

It is an amenable number.

4341232121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4341232121221 is an equidigital number, since it uses as much as digits as its factorization.

4341232121221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

Adding to 4341232121221 its reverse (1221212321434), we get a palindrome (5562444442655).

The spelling of 4341232121221 in words is "four trillion, three hundred forty-one billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred twenty-one".