102221212187 has 2 divisors, whose sum is σ = 102221212188. Its totient is φ = 102221212186.

The previous prime is 102221212153. The next prime is 102221212297. The reversal of 102221212187 is 781212122201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102221212187 - 2⁶ = 102221212123 is a prime.

It is not a weakly prime, because it can be changed into another prime (102221212147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110606093 + 51110606094.

It is an arithmetic number, because the mean of its divisors is an integer number (51110606094).

Almost surely, 2^102221212187 is an apocalyptic number.

102221212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221212187 is an equidigital number, since it uses as much as digits as its factorization.

102221212187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

Adding to 102221212187 its reverse (781212122201), we get a palindrome (883433334388).

The spelling of 102221212187 in words is "one hundred two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred eighty-seven".