101021201089 has 2 divisors, whose sum is σ = 101021201090. Its totient is φ = 101021201088.

The previous prime is 101021201027. The next prime is 101021201227. The reversal of 101021201089 is 980102120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95518083600 + 5503117489 = 309060^2 + 74183^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021201089 - 2⁷ = 101021200961 is a prime.

It is not a weakly prime, because it can be changed into another prime (101021201689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510600544 + 50510600545.

It is an arithmetic number, because the mean of its divisors is an integer number (50510600545).

Almost surely, 2^101021201089 is an apocalyptic number.

It is an amenable number.

101021201089 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021201089 is an equidigital number, since it uses as much as digits as its factorization.

101021201089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 101021201089 in words is "one hundred one billion, twenty-one million, two hundred one thousand, eighty-nine".