211210221110087 has 2 divisors, whose sum is σ = 211210221110088. Its totient is φ = 211210221110086.

The previous prime is 211210221110051. The next prime is 211210221110113. The reversal of 211210221110087 is 780011122012112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211210221110087 - 2²⁸ = 211209952674631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210221170087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605110555043 + 105605110555044.

It is an arithmetic number, because the mean of its divisors is an integer number (105605110555044).

Almost surely, 2^{211210221110087} is an apocalyptic number.

211210221110087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210221110087 is an equidigital number, since it uses as much as digits as its factorization.

211210221110087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 29.

Adding to 211210221110087 its reverse (780011122012112), we get a palindrome (991221343122199).

The spelling of 211210221110087 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twenty-one million, one hundred ten thousand, eighty-seven".