20440131041111 has 16 divisors (see below), whose sum is σ = 20927979072000. Its totient is φ = 19952853959808.

The previous prime is 20440131041089. The next prime is 20440131041137. The reversal of 20440131041111 is 11114013104402.

It is a cyclic number.

It is not a de Polignac number, because 20440131041111 - 2¹⁴ = 20440131024727 is a prime.

It is a super-2 number, since 2×20440131041111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440131091111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849924815 + ... + 849948863.

It is an arithmetic number, because the mean of its divisors is an integer number (1307998692000).

Almost surely, 2^{20440131041111} is an apocalyptic number.

20440131041111 is a deficient number, since it is larger than the sum of its proper divisors (487848030889).

20440131041111 is a wasteful number, since it uses less digits than its factorization.

20440131041111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35078.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 20440131041111 its reverse (11114013104402), we get a palindrome (31554144145513).

The spelling of 20440131041111 in words is "twenty trillion, four hundred forty billion, one hundred thirty-one million, forty-one thousand, one hundred eleven".