201210202021 has 16 divisors (see below), whose sum is σ = 204706389888. Its totient is φ = 197749440000.

The previous prime is 201210202007. The next prime is 201210202091. The reversal of 201210202021 is 120202012102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201210202021 - 2³⁷ = 63771248549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201210201992 and 201210202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210202091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7250845 + ... + 7278541.

It is an arithmetic number, because the mean of its divisors is an integer number (12794149368).

Almost surely, 2^201210202021 is an apocalyptic number.

It is an amenable number.

201210202021 is a deficient number, since it is larger than the sum of its proper divisors (3496187867).

201210202021 is a wasteful number, since it uses less digits than its factorization.

201210202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28332.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201210202021 its reverse (120202012102), we get a palindrome (321412214123).

The spelling of 201210202021 in words is "two hundred one billion, two hundred ten million, two hundred two thousand, twenty-one".