2243121112543 has 4 divisors (see below), whose sum is σ = 2243140608808. Its totient is φ = 2243101616280.

The previous prime is 2243121112541. The next prime is 2243121112553. The reversal of 2243121112543 is 3452111213422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2243121112543 - 2¹ = 2243121112541 is a prime.

It is a super-3 number, since 3×2243121112543³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243121112541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9574521 + ... + 9806002.

It is an arithmetic number, because the mean of its divisors is an integer number (560785152202).

Almost surely, 2^{2243121112543} is an apocalyptic number.

2243121112543 is a deficient number, since it is larger than the sum of its proper divisors (19496265).

2243121112543 is a wasteful number, since it uses less digits than its factorization.

2243121112543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19496264.

The product of its digits is 11520, while the sum is 31.

Adding to 2243121112543 its reverse (3452111213422), we get a palindrome (5695232325965).

The spelling of 2243121112543 in words is "two trillion, two hundred forty-three billion, one hundred twenty-one million, one hundred twelve thousand, five hundred forty-three".