212210110020021 has 16 divisors (see below), whose sum is σ = 283089883359360. Its totient is φ = 141401873471040.

The previous prime is 212210110019867. The next prime is 212210110020047. The reversal of 212210110020021 is 120020011012212.

It is not a de Polignac number, because 212210110020021 - 2¹⁰ = 212210110018997 is a prime.

It is a super-3 number, since 3×212210110020021³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210110020071) 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 15 ways as a sum of consecutive naturals, for example, 615960016 + ... + 616304438.

It is an arithmetic number, because the mean of its divisors is an integer number (17693117709960).

Almost surely, 2^{212210110020021} is an apocalyptic number.

It is an amenable number.

212210110020021 is a deficient number, since it is larger than the sum of its proper divisors (70879773339339).

212210110020021 is a wasteful number, since it uses less digits than its factorization.

212210110020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447676.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212210110020021 its reverse (120020011012212), we get a palindrome (332230121032233).

The spelling of 212210110020021 in words is "two hundred twelve trillion, two hundred ten billion, one hundred ten million, twenty thousand, twenty-one".