210220020187 has 2 divisors, whose sum is σ = 210220020188. Its totient is φ = 210220020186.

The previous prime is 210220020173. The next prime is 210220020221. The reversal of 210220020187 is 781020022012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210220020187 is a prime.

It is not a weakly prime, because it can be changed into another prime (210220026187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110010093 + 105110010094.

It is an arithmetic number, because the mean of its divisors is an integer number (105110010094).

Almost surely, 2^210220020187 is an apocalyptic number.

210220020187 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220020187 is an equidigital number, since it uses as much as digits as its factorization.

210220020187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 210220020187 its reverse (781020022012), we get a palindrome (991240042199).

The spelling of 210220020187 in words is "two hundred ten billion, two hundred twenty million, twenty thousand, one hundred eighty-seven".