20043021103 has 12 divisors (see below), whose sum is σ = 23331748440. Its totient is φ = 17167650192.

The previous prime is 20043021083. The next prime is 20043021121. The reversal of 20043021103 is 30112034002.

It is a happy number.

It is not a de Polignac number, because 20043021103 - 2⁵ = 20043021071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043024103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73101 + ... + 213142.

It is an arithmetic number, because the mean of its divisors is an integer number (1944312370).

Almost surely, 2^20043021103 is an apocalyptic number.

20043021103 is a deficient number, since it is larger than the sum of its proper divisors (3288727337).

20043021103 is a wasteful number, since it uses less digits than its factorization.

20043021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287686 (or 287679 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20043021103 its reverse (30112034002), we get a palindrome (50155055105).

The spelling of 20043021103 in words is "twenty billion, forty-three million, twenty-one thousand, one hundred three".