10011010010021 has 2 divisors, whose sum is σ = 10011010010022. Its totient is φ = 10011010010020.

The previous prime is 10011010009999. The next prime is 10011010010069. The reversal of 10011010010021 is 12001001011001.

It is a happy number.

10011010010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10004005993921 + 7004016100 = 3162911^2 + 83690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011010010021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10011010009990 and 10011010010008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10011010015021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005505005010 + 5005505005011.

It is an arithmetic number, because the mean of its divisors is an integer number (5005505005011).

Almost surely, 2^{10011010010021} is an apocalyptic number.

It is an amenable number.

10011010010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011010010021 is an equidigital number, since it uses as much as digits as its factorization.

10011010010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10011010010021 its reverse (12001001011001), we get a palindrome (22012011021022).

The spelling of 10011010010021 in words is "ten trillion, eleven billion, ten million, ten thousand, twenty-one".