20001138103 has 2 divisors, whose sum is σ = 20001138104. Its totient is φ = 20001138102.

The previous prime is 20001138097. The next prime is 20001138161. The reversal of 20001138103 is 30183110002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001138103 - 2²¹ = 19999040951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001138193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000569051 + 10000569052.

It is an arithmetic number, because the mean of its divisors is an integer number (10000569052).

Almost surely, 2^20001138103 is an apocalyptic number.

20001138103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001138103 is an equidigital number, since it uses as much as digits as its factorization.

20001138103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20001138103 its reverse (30183110002), we get a palindrome (50184248105).

The spelling of 20001138103 in words is "twenty billion, one million, one hundred thirty-eight thousand, one hundred three".