10010011000021 has 2 divisors, whose sum is σ = 10010011000022. Its totient is φ = 10010011000020.

The previous prime is 10010011000019. The next prime is 10010011000039. The reversal of 10010011000021 is 12000011001001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5623604359396 + 4386406640625 = 2371414^2 + 2094375^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010011000021 - 2¹ = 10010011000019 is a prime.

Together with 10010011000019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10010010999968 and 10010011000013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010011003021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005005500010 + 5005005500011.

It is an arithmetic number, because the mean of its divisors is an integer number (5005005500011).

Almost surely, 2^{10010011000021} is an apocalyptic number.

It is an amenable number.

10010011000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010011000021 is an equidigital number, since it uses as much as digits as its factorization.

10010011000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10010011000021 its reverse (12000011001001), we get a palindrome (22010022001022).

The spelling of 10010011000021 in words is "ten trillion, ten billion, eleven million, twenty-one", and thus it is an aban number and an uban number.