243221141155 has 32 divisors (see below), whose sum is σ = 304773694848. Its totient is φ = 186158668800.

The previous prime is 243221141143. The next prime is 243221141197. The reversal of 243221141155 is 551141122342.

It is not a de Polignac number, because 243221141155 - 2⁷ = 243221141027 is a prime.

It is a Duffinian 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, 29776882 + ... + 29785048.

It is an arithmetic number, because the mean of its divisors is an integer number (9524177964).

Almost surely, 2^243221141155 is an apocalyptic number.

243221141155 is a deficient number, since it is larger than the sum of its proper divisors (61552553693).

243221141155 is a wasteful number, since it uses less digits than its factorization.

243221141155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007.

The product of its digits is 9600, while the sum is 31.

Adding to 243221141155 its reverse (551141122342), we get a palindrome (794362263497).

The spelling of 243221141155 in words is "two hundred forty-three billion, two hundred twenty-one million, one hundred forty-one thousand, one hundred fifty-five".