2101330210021 has 24 divisors (see below), whose sum is σ = 2589172120256. Its totient is φ = 1669889295360.

The previous prime is 2101330210019. The next prime is 2101330210037. The reversal of 2101330210021 is 1200120331012.

It is not a de Polignac number, because 2101330210021 - 2¹ = 2101330210019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101330209977 and 2101330210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101330210051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7616100 + ... + 7887181.

Almost surely, 2^{2101330210021} is an apocalyptic number.

It is an amenable number.

2101330210021 is a deficient number, since it is larger than the sum of its proper divisors (487841910235).

2101330210021 is a wasteful number, since it uses less digits than its factorization.

2101330210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15503389 (or 15503372 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2101330210021 its reverse (1200120331012), we get a palindrome (3301450541033).

The spelling of 2101330210021 in words is "two trillion, one hundred one billion, three hundred thirty million, two hundred ten thousand, twenty-one".