20102110187 has 2 divisors, whose sum is σ = 20102110188. Its totient is φ = 20102110186.

The previous prime is 20102110121. The next prime is 20102110277. The reversal of 20102110187 is 78101120102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20102110187 - 2⁸ = 20102109931 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102110117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051055093 + 10051055094.

It is an arithmetic number, because the mean of its divisors is an integer number (10051055094).

Almost surely, 2^20102110187 is an apocalyptic number.

20102110187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102110187 is an equidigital number, since it uses as much as digits as its factorization.

20102110187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 20102110187 its reverse (78101120102), we get a palindrome (98203230289).

The spelling of 20102110187 in words is "twenty billion, one hundred two million, one hundred ten thousand, one hundred eighty-seven".