20010202187 has 2 divisors, whose sum is σ = 20010202188. Its totient is φ = 20010202186.

The previous prime is 20010202141. The next prime is 20010202243. The reversal of 20010202187 is 78120201002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010202187 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005101093 + 10005101094.

It is an arithmetic number, because the mean of its divisors is an integer number (10005101094).

Almost surely, 2^20010202187 is an apocalyptic number.

20010202187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010202187 is an equidigital number, since it uses as much as digits as its factorization.

20010202187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20010202187 its reverse (78120201002), we get a palindrome (98130403189).

The spelling of 20010202187 in words is "twenty billion, ten million, two hundred two thousand, one hundred eighty-seven".