201210010021 has 12 divisors (see below), whose sum is σ = 205915679680. Its totient is φ = 196609469400.

The previous prime is 201210010019. The next prime is 201210010049. The reversal of 201210010021 is 120010012102.

201210010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201210010021 - 2¹ = 201210010019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210010091) 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 11 ways as a sum of consecutive naturals, for example, 1293796 + ... + 1440946.

Almost surely, 2^201210010021 is an apocalyptic number.

It is an amenable number.

201210010021 is a deficient number, since it is larger than the sum of its proper divisors (4705669659).

201210010021 is an equidigital number, since it uses as much as digits as its factorization.

201210010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147864 (or 147817 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201210010021 its reverse (120010012102), we get a palindrome (321220022123).

The spelling of 201210010021 in words is "two hundred one billion, two hundred ten million, ten thousand, twenty-one".