221012221111189 has 2 divisors, whose sum is σ = 221012221111190. Its totient is φ = 221012221111188.

The previous prime is 221012221111169. The next prime is 221012221111247. The reversal of 221012221111189 is 981111122210122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153298248788689 + 67713972322500 = 12381367^2 + 8228850^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012221111189 - 2³⁷ = 220874782157717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221012221111169) 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, 110506110555594 + 110506110555595.

It is an arithmetic number, because the mean of its divisors is an integer number (110506110555595).

Almost surely, 2^{221012221111189} is an apocalyptic number.

It is an amenable number.

221012221111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012221111189 is an equidigital number, since it uses as much as digits as its factorization.

221012221111189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 34.

The spelling of 221012221111189 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, one hundred eleven thousand, one hundred eighty-nine".