243122000201 has 2 divisors, whose sum is σ = 243122000202. Its totient is φ = 243122000200.

The previous prime is 243122000197. The next prime is 243122000249. The reversal of 243122000201 is 102000221342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138648246025 + 104473754176 = 372355^2 + 323224^2 .

It is a cyclic number.

It is not a de Polignac number, because 243122000201 - 2² = 243122000197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243122000201.

It is not a weakly prime, because it can be changed into another prime (243122000291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561000100 + 121561000101.

It is an arithmetic number, because the mean of its divisors is an integer number (121561000101).

Almost surely, 2^243122000201 is an apocalyptic number.

It is an amenable number.

243122000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

243122000201 is an equidigital number, since it uses as much as digits as its factorization.

243122000201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 243122000201 its reverse (102000221342), we get a palindrome (345122221543).

The spelling of 243122000201 in words is "two hundred forty-three billion, one hundred twenty-two million, two hundred one", and thus it is an aban number.