20201101187 has 2 divisors, whose sum is σ = 20201101188. Its totient is φ = 20201101186.

The previous prime is 20201101171. The next prime is 20201101229. The reversal of 20201101187 is 78110110202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201101187 - 2⁴ = 20201101171 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201101117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100550593 + 10100550594.

It is an arithmetic number, because the mean of its divisors is an integer number (10100550594).

Almost surely, 2^20201101187 is an apocalyptic number.

20201101187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201101187 is an equidigital number, since it uses as much as digits as its factorization.

20201101187 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20201101187 its reverse (78110110202), we get a palindrome (98311211389).

The spelling of 20201101187 in words is "twenty billion, two hundred one million, one hundred one thousand, one hundred eighty-seven".