20111043241043 has 4 divisors (see below), whose sum is σ = 20231468649840. Its totient is φ = 19990617832248.

The previous prime is 20111043241033. The next prime is 20111043241057. The reversal of 20111043241043 is 34014234011102.

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 20111043241043 - 2¹⁸ = 20111042978899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111043241033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60212704148 + ... + 60212704481.

It is an arithmetic number, because the mean of its divisors is an integer number (5057867162460).

Almost surely, 2^{20111043241043} is an apocalyptic number.

20111043241043 is a deficient number, since it is larger than the sum of its proper divisors (120425408797).

20111043241043 is a wasteful number, since it uses less digits than its factorization.

20111043241043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120425408796.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20111043241043 its reverse (34014234011102), we get a palindrome (54125277252145).

The spelling of 20111043241043 in words is "twenty trillion, one hundred eleven billion, forty-three million, two hundred forty-one thousand, forty-three".