211122211002187 has 2 divisors, whose sum is σ = 211122211002188. Its totient is φ = 211122211002186.

The previous prime is 211122211002179. The next prime is 211122211002211. The reversal of 211122211002187 is 781200112221112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211122211002187 - 2³ = 211122211002179 is a prime.

It is not a weakly prime, because it can be changed into another prime (211122211002587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561105501093 + 105561105501094.

It is an arithmetic number, because the mean of its divisors is an integer number (105561105501094).

Almost surely, 2^{211122211002187} is an apocalyptic number.

211122211002187 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122211002187 is an equidigital number, since it uses as much as digits as its factorization.

211122211002187 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 31.

Adding to 211122211002187 its reverse (781200112221112), we get a palindrome (992322323223299).

The spelling of 211122211002187 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred eleven million, two thousand, one hundred eighty-seven".