10010110021 has 4 divisors (see below), whose sum is σ = 10033228492. Its totient is φ = 9986991552.

The previous prime is 10010109997. The next prime is 10010110037. The reversal of 10010110021 is 12001101001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4954188996 + 5055921025 = 70386^2 + 71105^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010110021 - 2²⁹ = 9473239109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010109986 and 10010110013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010110321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11558586 + ... + 11559451.

It is an arithmetic number, because the mean of its divisors is an integer number (2508307123).

Almost surely, 2^10010110021 is an apocalyptic number.

It is an amenable number.

10010110021 is a deficient number, since it is larger than the sum of its proper divisors (23118471).

10010110021 is an equidigital number, since it uses as much as digits as its factorization.

10010110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23118470.

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

Adding to 10010110021 its reverse (12001101001), we get a palindrome (22011211022).

The spelling of 10010110021 in words is "ten billion, ten million, one hundred ten thousand, twenty-one".