20112243312043 has 16 divisors (see below), whose sum is σ = 20639533824000. Its totient is φ = 19589323038912.

The previous prime is 20112243311987. The next prime is 20112243312107. The reversal of 20112243312043 is 34021334221102.

It is a cyclic number.

It is not a de Polignac number, because 20112243312043 - 2¹⁷ = 20112243180971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112243312143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6805918 + ... + 9302956.

It is an arithmetic number, because the mean of its divisors is an integer number (1289970864000).

Almost surely, 2^{20112243312043} is an apocalyptic number.

20112243312043 is a deficient number, since it is larger than the sum of its proper divisors (527290511957).

20112243312043 is a wasteful number, since it uses less digits than its factorization.

20112243312043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497914.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20112243312043 its reverse (34021334221102), we get a palindrome (54133577533145).

The spelling of 20112243312043 in words is "twenty trillion, one hundred twelve billion, two hundred forty-three million, three hundred twelve thousand, forty-three".