211341443421 has 16 divisors (see below), whose sum is σ = 300510907200. Its totient is φ = 131652388608.

The previous prime is 211341443393. The next prime is 211341443429. The reversal of 211341443421 is 124344143112.

It is a happy number.

211341443421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211341443421 - 2⁹ = 211341442909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211341443429) 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, 14899206 + ... + 14913383.

It is an arithmetic number, because the mean of its divisors is an integer number (18781931700).

Almost surely, 2^211341443421 is an apocalyptic number.

It is an amenable number.

211341443421 is a deficient number, since it is larger than the sum of its proper divisors (89169463779).

211341443421 is a wasteful number, since it uses less digits than its factorization.

211341443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29812748.

The product of its digits is 9216, while the sum is 30.

Adding to 211341443421 its reverse (124344143112), we get a palindrome (335685586533).

The spelling of 211341443421 in words is "two hundred eleven billion, three hundred forty-one million, four hundred forty-three thousand, four hundred twenty-one".