20011112144441 has 16 divisors (see below), whose sum is σ = 21842517086208. Its totient is φ = 18181744131600.

The previous prime is 20011112144423. The next prime is 20011112144449. The reversal of 20011112144441 is 14444121111002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011112144441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20011112144441.

It is not an unprimeable number, because it can be changed into a prime (20011112144449) 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 15 ways as a sum of consecutive naturals, for example, 372404546 + ... + 372458276.

It is an arithmetic number, because the mean of its divisors is an integer number (1365157317888).

Almost surely, 2^{20011112144441} is an apocalyptic number.

It is an amenable number.

20011112144441 is a deficient number, since it is larger than the sum of its proper divisors (1831404941767).

20011112144441 is a wasteful number, since it uses less digits than its factorization.

20011112144441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72052.

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 20011112144441 its reverse (14444121111002), we get a palindrome (34455233255443).

The spelling of 20011112144441 in words is "twenty trillion, eleven billion, one hundred twelve million, one hundred forty-four thousand, four hundred forty-one".