20441420111 has 20 divisors (see below), whose sum is σ = 24007371000. Its totient is φ = 17403320592.

The previous prime is 20441420089. The next prime is 20441420137. The reversal of 20441420111 is 11102414402.

It is not a de Polignac number, because 20441420111 - 2¹⁸ = 20441157967 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 (20441420011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 329180 + ... + 386318.

It is an arithmetic number, because the mean of its divisors is an integer number (1200368550).

Almost surely, 2^20441420111 is an apocalyptic number.

20441420111 is a deficient number, since it is larger than the sum of its proper divisors (3565950889).

20441420111 is an frugal number, since it uses more digits than its factorization.

20441420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57316 (or 57295 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20441420111 its reverse (11102414402), we get a palindrome (31543834513).

The spelling of 20441420111 in words is "twenty billion, four hundred forty-one million, four hundred twenty thousand, one hundred eleven".