211421211443 has 8 divisors (see below), whose sum is σ = 228840142608. Its totient is φ = 194167389024.

The previous prime is 211421211431. The next prime is 211421211451. The reversal of 211421211443 is 344112124112.

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 211421211443 - 2¹⁶ = 211421145907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211421201443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41274521 + ... + 41279642.

It is an arithmetic number, because the mean of its divisors is an integer number (28605017826).

Almost surely, 2^211421211443 is an apocalyptic number.

211421211443 is a deficient number, since it is larger than the sum of its proper divisors (17418931165).

211421211443 is a wasteful number, since it uses less digits than its factorization.

211421211443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82554373.

The product of its digits is 1536, while the sum is 26.

Adding to 211421211443 its reverse (344112124112), we get a palindrome (555533335555).

The spelling of 211421211443 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred eleven thousand, four hundred forty-three".