20203103112187 has 2 divisors, whose sum is σ = 20203103112188. Its totient is φ = 20203103112186.

The previous prime is 20203103112173. The next prime is 20203103112217. The reversal of 20203103112187 is 78121130130202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20203103112187 - 2¹¹ = 20203103110139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20203103112167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101551556093 + 10101551556094.

It is an arithmetic number, because the mean of its divisors is an integer number (10101551556094).

Almost surely, 2^{20203103112187} is an apocalyptic number.

20203103112187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203103112187 is an equidigital number, since it uses as much as digits as its factorization.

20203103112187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

Adding to 20203103112187 its reverse (78121130130202), we get a palindrome (98324233242389).

The spelling of 20203103112187 in words is "twenty trillion, two hundred three billion, one hundred three million, one hundred twelve thousand, one hundred eighty-seven".