210202112021 has 32 divisors (see below), whose sum is σ = 242770784256. Its totient is φ = 180203184000.

The previous prime is 210202111963. The next prime is 210202112033. The reversal of 210202112021 is 120211202012.

It is a cyclic number.

It is not a de Polignac number, because 210202112021 - 2¹⁰ = 210202110997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210202111987 and 210202112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202112041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12336710 + ... + 12353736.

It is an arithmetic number, because the mean of its divisors is an integer number (7586587008).

Almost surely, 2^210202112021 is an apocalyptic number.

It is an amenable number.

210202112021 is a deficient number, since it is larger than the sum of its proper divisors (32568672235).

210202112021 is a wasteful number, since it uses less digits than its factorization.

210202112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17993.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210202112021 its reverse (120211202012), we get a palindrome (330413314033).

It can be divided in two parts, 210202 and 112021, that added together give a palindrome (322223).

The spelling of 210202112021 in words is "two hundred ten billion, two hundred two million, one hundred twelve thousand, twenty-one".