101211022189 has 2 divisors, whose sum is σ = 101211022190. Its totient is φ = 101211022188.

The previous prime is 101211022181. The next prime is 101211022193. The reversal of 101211022189 is 981220112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101152622025 + 58400164 = 318045^2 + 7642^2 .

It is an emirp because it is prime and its reverse (981220112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101211022189 - 2³ = 101211022181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211022181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605511094 + 50605511095.

It is an arithmetic number, because the mean of its divisors is an integer number (50605511095).

Almost surely, 2^101211022189 is an apocalyptic number.

It is an amenable number.

101211022189 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211022189 is an equidigital number, since it uses as much as digits as its factorization.

101211022189 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 28.

The spelling of 101211022189 in words is "one hundred one billion, two hundred eleven million, twenty-two thousand, one hundred eighty-nine".