243121244223 has 32 divisors (see below), whose sum is σ = 381564594432. Its totient is φ = 135750700800.

The previous prime is 243121244213. The next prime is 243121244287. The reversal of 243121244223 is 322442121342.

It is not a de Polignac number, because 243121244223 - 2⁶ = 243121244159 is a prime.

It is a super-2 number, since 2×243121244223² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121244213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320365 + ... + 767382.

It is an arithmetic number, because the mean of its divisors is an integer number (11923893576).

Almost surely, 2^243121244223 is an apocalyptic number.

243121244223 is a deficient number, since it is larger than the sum of its proper divisors (138443350209).

243121244223 is a wasteful number, since it uses less digits than its factorization.

243121244223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088295.

The product of its digits is 18432, while the sum is 30.

Adding to 243121244223 its reverse (322442121342), we get a palindrome (565563365565).

The spelling of 243121244223 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, two hundred twenty-three".