210202220112021 has 24 divisors (see below), whose sum is σ = 306021221722944. Its totient is φ = 139033407744000.

The previous prime is 210202220111963. The next prime is 210202220112037. The reversal of 210202220112021 is 120211022202012.

It is a happy number.

210202220112021 is a `hidden beast` number, since 210 + 20 + 2 + 220 + 11 + 202 + 1 = 666.

It is not a de Polignac number, because 210202220112021 - 2²⁵ = 210202186557589 is a prime.

It is a super-3 number, since 3×210202220112021³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210202220111985 and 210202220112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202220110021) 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 23 ways as a sum of consecutive naturals, for example, 180452521 + ... + 181613646.

It is an arithmetic number, because the mean of its divisors is an integer number (12750884238456).

Almost surely, 2^{210202220112021} is an apocalyptic number.

It is an amenable number.

210202220112021 is a deficient number, since it is larger than the sum of its proper divisors (95819001610923).

210202220112021 is a wasteful number, since it uses less digits than its factorization.

210202220112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362066681 (or 362066678 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210202220112021 its reverse (120211022202012), we get a palindrome (330413242314033).

The spelling of 210202220112021 in words is "two hundred ten trillion, two hundred two billion, two hundred twenty million, one hundred twelve thousand, twenty-one".