221110101011087 has 2 divisors, whose sum is σ = 221110101011088. Its totient is φ = 221110101011086.

The previous prime is 221110101011057. The next prime is 221110101011099. The reversal of 221110101011087 is 780110101011122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221110101011087 - 2³² = 221105806043791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221110101011017) 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, 110555050505543 + 110555050505544.

It is an arithmetic number, because the mean of its divisors is an integer number (110555050505544).

Almost surely, 2^{221110101011087} is an apocalyptic number.

221110101011087 is a deficient number, since it is larger than the sum of its proper divisors (1).

221110101011087 is an equidigital number, since it uses as much as digits as its factorization.

221110101011087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 26.

The spelling of 221110101011087 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred one million, eleven thousand, eighty-seven".