20001103247 has 2 divisors, whose sum is σ = 20001103248. Its totient is φ = 20001103246.

The previous prime is 20001103193. The next prime is 20001103259. The reversal of 20001103247 is 74230110002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001103247 - 2¹⁶ = 20001037711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001103747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000551623 + 10000551624.

It is an arithmetic number, because the mean of its divisors is an integer number (10000551624).

Almost surely, 2^20001103247 is an apocalyptic number.

20001103247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001103247 is an equidigital number, since it uses as much as digits as its factorization.

20001103247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20001103247 its reverse (74230110002), we get a palindrome (94231213249).

The spelling of 20001103247 in words is "twenty billion, one million, one hundred three thousand, two hundred forty-seven".