212210413421 has 4 divisors (see below), whose sum is σ = 213036135132. Its totient is φ = 211384691712.

The previous prime is 212210413411. The next prime is 212210413511. The reversal of 212210413421 is 124314012212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170507055625 + 41703357796 = 412925^2 + 204214^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210413421 - 2¹⁴ = 212210397037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210413411) 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 3 ways as a sum of consecutive naturals, for example, 412860470 + ... + 412860983.

It is an arithmetic number, because the mean of its divisors is an integer number (53259033783).

Almost surely, 2^212210413421 is an apocalyptic number.

It is an amenable number.

212210413421 is a deficient number, since it is larger than the sum of its proper divisors (825721711).

212210413421 is an equidigital number, since it uses as much as digits as its factorization.

212210413421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825721710.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 212210413421 its reverse (124314012212), we get a palindrome (336524425633).

The spelling of 212210413421 in words is "two hundred twelve billion, two hundred ten million, four hundred thirteen thousand, four hundred twenty-one".