243114020221 has 2 divisors, whose sum is σ = 243114020222. Its totient is φ = 243114020220.

The previous prime is 243114020129. The next prime is 243114020267. The reversal of 243114020221 is 122020411342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207194294596 + 35919725625 = 455186^2 + 189525^2 .

It is a cyclic number.

It is not a de Polignac number, because 243114020221 - 2¹⁷ = 243113889149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243114020192 and 243114020201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243114020321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557010110 + 121557010111.

It is an arithmetic number, because the mean of its divisors is an integer number (121557010111).

Almost surely, 2^243114020221 is an apocalyptic number.

It is an amenable number.

243114020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

243114020221 is an equidigital number, since it uses as much as digits as its factorization.

243114020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243114020221 its reverse (122020411342), we get a palindrome (365134431563).

The spelling of 243114020221 in words is "two hundred forty-three billion, one hundred fourteen million, twenty thousand, two hundred twenty-one".