21010012099589 has 2 divisors, whose sum is σ = 21010012099590. Its totient is φ = 21010012099588.

The previous prime is 21010012099529. The next prime is 21010012099603. The reversal of 21010012099589 is 98599021001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11524782463489 + 9485229636100 = 3394817^2 + 3079810^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010012099589 - 2⁸ = 21010012099333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010012099529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505006049794 + 10505006049795.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006049795).

Almost surely, 2^{21010012099589} is an apocalyptic number.

It is an amenable number.

21010012099589 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010012099589 is an equidigital number, since it uses as much as digits as its factorization.

21010012099589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 47.

The spelling of 21010012099589 in words is "twenty-one trillion, ten billion, twelve million, ninety-nine thousand, five hundred eighty-nine".