211123022087 has 2 divisors, whose sum is σ = 211123022088. Its totient is φ = 211123022086.

The previous prime is 211123022081. The next prime is 211123022141. The reversal of 211123022087 is 780220321112.

211123022087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211123022087 - 2⁶ = 211123022023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211123022081) 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, 105561511043 + 105561511044.

It is an arithmetic number, because the mean of its divisors is an integer number (105561511044).

Almost surely, 2^211123022087 is an apocalyptic number.

211123022087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211123022087 is an equidigital number, since it uses as much as digits as its factorization.

211123022087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 211123022087 its reverse (780220321112), we get a palindrome (991343343199).

The spelling of 211123022087 in words is "two hundred eleven billion, one hundred twenty-three million, twenty-two thousand, eighty-seven".