21010011109093 has 2 divisors, whose sum is σ = 21010011109094. Its totient is φ = 21010011109092.

The previous prime is 21010011109081. The next prime is 21010011109103. The reversal of 21010011109093 is 39090111001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11988199910404 + 9021811198689 = 3462398^2 + 3003633^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010011109093 - 2¹³ = 21010011100901 is a prime.

It is a super-2 number, since 2×21010011109093² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010011109193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505005554546 + 10505005554547.

It is an arithmetic number, because the mean of its divisors is an integer number (10505005554547).

Almost surely, 2^{21010011109093} is an apocalyptic number.

It is an amenable number.

21010011109093 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010011109093 is an equidigital number, since it uses as much as digits as its factorization.

21010011109093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 21010011109093 in words is "twenty-one trillion, ten billion, eleven million, one hundred nine thousand, ninety-three".