20112243430141 has 4 divisors (see below), whose sum is σ = 20112500839612. Its totient is φ = 20111986020672.

The previous prime is 20112243430129. The next prime is 20112243430163. The reversal of 20112243430141 is 14103434221102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3819347119225 + 16292896310916 = 1954315^2 + 4036446^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112243430141 - 2²⁹ = 20111706559229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112243430241) 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, 128587500 + ... + 128743813.

It is an arithmetic number, because the mean of its divisors is an integer number (5028125209903).

Almost surely, 2^{20112243430141} is an apocalyptic number.

It is an amenable number.

20112243430141 is a deficient number, since it is larger than the sum of its proper divisors (257409471).

20112243430141 is an equidigital number, since it uses as much as digits as its factorization.

20112243430141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257409470.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 20112243430141 its reverse (14103434221102), we get a palindrome (34215677651243).

The spelling of 20112243430141 in words is "twenty trillion, one hundred twelve billion, two hundred forty-three million, four hundred thirty thousand, one hundred forty-one".