20441121111 has 6 divisors (see below), whose sum is σ = 29526063840. Its totient is φ = 13627414068.

The previous prime is 20441121109. The next prime is 20441121119. The reversal of 20441121111 is 11112114402.

20441121111 is a `hidden beast` number, since 2 + 0 + 441 + 1 + 211 + 11 = 666.

It is not a de Polignac number, because 20441121111 - 2¹ = 20441121109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441121119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1135617831 + ... + 1135617848.

It is an arithmetic number, because the mean of its divisors is an integer number (4921010640).

Almost surely, 2^20441121111 is an apocalyptic number.

20441121111 is a deficient number, since it is larger than the sum of its proper divisors (9084942729).

20441121111 is a wasteful number, since it uses less digits than its factorization.

20441121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271235685 (or 2271235682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20441121111 its reverse (11112114402), we get a palindrome (31553235513).

It can be divided in two parts, 204411 and 21111, that added together give a palindrome (225522).

The spelling of 20441121111 in words is "twenty billion, four hundred forty-one million, one hundred twenty-one thousand, one hundred eleven".