221022021121087 has 2 divisors, whose sum is σ = 221022021121088. Its totient is φ = 221022021121086.

The previous prime is 221022021120997. The next prime is 221022021121123. The reversal of 221022021121087 is 780121120220122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221022021121087 - 2¹⁹ = 221022020596799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221022021121787) 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, 110511010560543 + 110511010560544.

It is an arithmetic number, because the mean of its divisors is an integer number (110511010560544).

Almost surely, 2^{221022021121087} is an apocalyptic number.

221022021121087 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022021121087 is an equidigital number, since it uses as much as digits as its factorization.

221022021121087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 31.

The spelling of 221022021121087 in words is "two hundred twenty-one trillion, twenty-two billion, twenty-one million, one hundred twenty-one thousand, eighty-seven".