10100110021 has 2 divisors, whose sum is σ = 10100110022. Its totient is φ = 10100110020.

The previous prime is 10100110019. The next prime is 10100110043. The reversal of 10100110021 is 12001100101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8632453921 + 1467656100 = 92911^2 + 38310^2 .

It is a cyclic number.

It is not a de Polignac number, because 10100110021 - 2¹ = 10100110019 is a prime.

Together with 10100110019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10100109986 and 10100110013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10100110001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050055010 + 5050055011.

It is an arithmetic number, because the mean of its divisors is an integer number (5050055011).

Almost surely, 2^10100110021 is an apocalyptic number.

It is an amenable number.

10100110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10100110021 is an equidigital number, since it uses as much as digits as its factorization.

10100110021 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 10100110021 its reverse (12001100101), we get a palindrome (22101210122).

The spelling of 10100110021 in words is "ten billion, one hundred million, one hundred ten thousand, twenty-one".