20212124040043 has 128 divisors (see below), whose sum is σ = 23803794653184. Its totient is φ = 17015695488000.

The previous prime is 20212124040013. The next prime is 20212124040061. The reversal of 20212124040043 is 34004042121202.

It is a cyclic number.

It is not a de Polignac number, because 20212124040043 - 2²¹ = 20212121942891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212124040013) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 43280779296 + ... + 43280779762.

It is an arithmetic number, because the mean of its divisors is an integer number (185967145728).

Almost surely, 2^{20212124040043} is an apocalyptic number.

20212124040043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20212124040043 is a deficient number, since it is larger than the sum of its proper divisors (3591670613141).

20212124040043 is a wasteful number, since it uses less digits than its factorization.

20212124040043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20212124040043 its reverse (34004042121202), we get a palindrome (54216166161245).

The spelling of 20212124040043 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-four million, forty thousand, forty-three".