213214533421 has 4 divisors (see below), whose sum is σ = 214572587932. Its totient is φ = 211856478912.

The previous prime is 213214533407. The next prime is 213214533451. The reversal of 213214533421 is 124335412312.

213214533421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 34627999396 + 178586534025 = 186086^2 + 422595^2 .

It is a cyclic number.

It is not a de Polignac number, because 213214533421 - 2¹¹ = 213214531373 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 (213214533451) 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 3 ways as a sum of consecutive naturals, for example, 679027020 + ... + 679027333.

It is an arithmetic number, because the mean of its divisors is an integer number (53643146983).

Almost surely, 2^213214533421 is an apocalyptic number.

It is an amenable number.

213214533421 is a deficient number, since it is larger than the sum of its proper divisors (1358054511).

213214533421 is a wasteful number, since it uses less digits than its factorization.

213214533421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358054510.

The product of its digits is 17280, while the sum is 31.

Adding to 213214533421 its reverse (124335412312), we get a palindrome (337549945733).

The spelling of 213214533421 in words is "two hundred thirteen billion, two hundred fourteen million, five hundred thirty-three thousand, four hundred twenty-one".