20112440105 has 8 divisors (see below), whose sum is σ = 24138434112. Its totient is φ = 16087614768.

The previous prime is 20112440039. The next prime is 20112440147. The reversal of 20112440105 is 50104421102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112440105 is a prime.

It is a super-2 number, since 2×20112440105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253847 + ... + 323516.

It is an arithmetic number, because the mean of its divisors is an integer number (3017304264).

Almost surely, 2^20112440105 is an apocalyptic number.

It is an amenable number.

20112440105 is a deficient number, since it is larger than the sum of its proper divisors (4025994007).

20112440105 is an equidigital number, since it uses as much as digits as its factorization.

20112440105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584335.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20112440105 its reverse (50104421102), we get a palindrome (70216861207).

The spelling of 20112440105 in words is "twenty billion, one hundred twelve million, four hundred forty thousand, one hundred five".