212110210021 has 8 divisors (see below), whose sum is σ = 212279760000. Its totient is φ = 211940731920.

The previous prime is 212110210001. The next prime is 212110210031. The reversal of 212110210021 is 120012011212.

212110210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212110210021 - 2²³ = 212101821413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212110209983 and 212110210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110210001) 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 7 ways as a sum of consecutive naturals, for example, 6909376 + ... + 6940006.

It is an arithmetic number, because the mean of its divisors is an integer number (26534970000).

Almost surely, 2^212110210021 is an apocalyptic number.

It is an amenable number.

212110210021 is a deficient number, since it is larger than the sum of its proper divisors (169549979).

212110210021 is a wasteful number, since it uses less digits than its factorization.

212110210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35939.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212110210021 its reverse (120012011212), we get a palindrome (332122221233).

The spelling of 212110210021 in words is "two hundred twelve billion, one hundred ten million, two hundred ten thousand, twenty-one".