21011120201189 has 2 divisors, whose sum is σ = 21011120201190. Its totient is φ = 21011120201188.

The previous prime is 21011120201153. The next prime is 21011120201317. The reversal of 21011120201189 is 98110202111012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18974126164900 + 2036994036289 = 4355930^2 + 1427233^2 .

It is a cyclic number.

It is not a de Polignac number, because 21011120201189 - 2⁸ = 21011120200933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21011120201119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505560100594 + 10505560100595.

It is an arithmetic number, because the mean of its divisors is an integer number (10505560100595).

Almost surely, 2^{21011120201189} is an apocalyptic number.

It is an amenable number.

21011120201189 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011120201189 is an equidigital number, since it uses as much as digits as its factorization.

21011120201189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 21011120201189 in words is "twenty-one trillion, eleven billion, one hundred twenty million, two hundred one thousand, one hundred eighty-nine".