20440012103 has 4 divisors (see below), whose sum is σ = 23360013840. Its totient is φ = 17520010368.

The previous prime is 20440012091. The next prime is 20440012111. The reversal of 20440012103 is 30121004402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20440012103 - 2²⁰ = 20438963527 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 (20440012193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460000858 + ... + 1460000871.

It is an arithmetic number, because the mean of its divisors is an integer number (5840003460).

Almost surely, 2^20440012103 is an apocalyptic number.

20440012103 is a deficient number, since it is larger than the sum of its proper divisors (2920001737).

20440012103 is an equidigital number, since it uses as much as digits as its factorization.

20440012103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920001736.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20440012103 its reverse (30121004402), we get a palindrome (50561016505).

The spelling of 20440012103 in words is "twenty billion, four hundred forty million, twelve thousand, one hundred three".