243121423322223 has 48 divisors (see below), whose sum is σ = 366763733111776. Its totient is φ = 155037039793920.

The previous prime is 243121423322189. The next prime is 243121423322249. The reversal of 243121423322223 is 322223324121342.

243121423322223 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 2 + 1 + 423 + 3 + 2 + 2 + 223 = 666.

It is not a de Polignac number, because 243121423322223 - 2¹⁸ = 243121423060079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121423322023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37350165 + ... + 43373697.

Almost surely, 2^{243121423322223} is an apocalyptic number.

243121423322223 is a deficient number, since it is larger than the sum of its proper divisors (123642309789553).

243121423322223 is a wasteful number, since it uses less digits than its factorization.

243121423322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025624 (or 6025621 counting only the distinct ones).

The product of its digits is 165888, while the sum is 36.

Adding to 243121423322223 its reverse (322223324121342), we get a palindrome (565344747443565).

The spelling of 243121423322223 in words is "two hundred forty-three trillion, one hundred twenty-one billion, four hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-three".