10010100021 has 16 divisors (see below), whose sum is σ = 14476589568. Its totient is φ = 6127654400.

The previous prime is 10010100019. The next prime is 10010100031. The reversal of 10010100021 is 12000101001.

It is a cyclic number.

It is not a de Polignac number, because 10010100021 - 2¹ = 10010100019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10010099982 and 10010100009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010100031) 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 15 ways as a sum of consecutive naturals, for example, 2391525 + ... + 2395706.

It is an arithmetic number, because the mean of its divisors is an integer number (904786848).

Almost surely, 2^10010100021 is an apocalyptic number.

It is an amenable number.

10010100021 is a deficient number, since it is larger than the sum of its proper divisors (4466489547).

10010100021 is a wasteful number, since it uses less digits than its factorization.

10010100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787292.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 10010100021 its reverse (12000101001), we get a palindrome (22010201022).

The spelling of 10010100021 in words is "ten billion, ten million, one hundred thousand, twenty-one".