20211118133244 has 12 divisors (see below), whose sum is σ = 47159275644264. Its totient is φ = 6737039377744.

The previous prime is 20211118133237. The next prime is 20211118133347. The reversal of 20211118133244 is 44233181111202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842129922207 + ... + 842129922230.

It is an arithmetic number, because the mean of its divisors is an integer number (3929939637022).

Almost surely, 2^{20211118133244} is an apocalyptic number.

It is an amenable number.

20211118133244 is an abundant number, since it is smaller than the sum of its proper divisors (26948157511020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211118133244 is a wasteful number, since it uses less digits than its factorization.

20211118133244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684259844444 (or 1684259844442 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

Adding to 20211118133244 its reverse (44233181111202), we get a palindrome (64444299244446).

The spelling of 20211118133244 in words is "twenty trillion, two hundred eleven billion, one hundred eighteen million, one hundred thirty-three thousand, two hundred forty-four".