243121224205 has 32 divisors (see below), whose sum is σ = 296682317568. Its totient is φ = 191237760000.

The previous prime is 243121224169. The next prime is 243121224251. The reversal of 243121224205 is 502422121342.

It is not a de Polignac number, because 243121224205 - 2⁷ = 243121224077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43559515 + ... + 43565095.

It is an arithmetic number, because the mean of its divisors is an integer number (9271322424).

Almost surely, 2^243121224205 is an apocalyptic number.

It is an amenable number.

243121224205 is a deficient number, since it is larger than the sum of its proper divisors (53561093363).

243121224205 is a wasteful number, since it uses less digits than its factorization.

243121224205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 243121224205 its reverse (502422121342), we get a palindrome (745543345547).

The spelling of 243121224205 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred twenty-four thousand, two hundred five".