243122203345 has 16 divisors (see below), whose sum is σ = 334628448768. Its totient is φ = 166110511680.

The previous prime is 243122203327. The next prime is 243122203361. The reversal of 243122203345 is 543302221342.

It is not a de Polignac number, because 243122203345 - 2¹¹ = 243122201297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12528841 + ... + 12548230.

It is an arithmetic number, because the mean of its divisors is an integer number (20914278048).

Almost surely, 2^243122203345 is an apocalyptic number.

It is an amenable number.

243122203345 is a deficient number, since it is larger than the sum of its proper divisors (91506245423).

243122203345 is a wasteful number, since it uses less digits than its factorization.

243122203345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25077360.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 243122203345 its reverse (543302221342), we get a palindrome (786424424687).

The spelling of 243122203345 in words is "two hundred forty-three billion, one hundred twenty-two million, two hundred three thousand, three hundred forty-five".