10021210010021 has 16 divisors (see below), whose sum is σ = 11647551590400. Its totient is φ = 8443569085488.

The previous prime is 10021210010017. The next prime is 10021210010057. The reversal of 10021210010021 is 12001001212001.

It is not a de Polignac number, because 10021210010021 - 2² = 10021210010017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021210009984 and 10021210010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021210010011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7172276 + ... + 8454818.

It is an arithmetic number, because the mean of its divisors is an integer number (727971974400).

Almost surely, 2^{10021210010021} is an apocalyptic number.

It is an amenable number.

10021210010021 is a deficient number, since it is larger than the sum of its proper divisors (1626341580379).

10021210010021 is a wasteful number, since it uses less digits than its factorization.

10021210010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301528.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10021210010021 its reverse (12001001212001), we get a palindrome (22022211222022).

The spelling of 10021210010021 in words is "ten trillion, twenty-one billion, two hundred ten million, ten thousand, twenty-one".