211224122443 has 4 divisors (see below), whose sum is σ = 223649070840. Its totient is φ = 198799174048.

The previous prime is 211224122413. The next prime is 211224122497. The reversal of 211224122443 is 344221422112.

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

It is a cyclic number.

It is not a de Polignac number, because 211224122443 - 2¹³ = 211224114251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211224122413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6212474173 + ... + 6212474206.

It is an arithmetic number, because the mean of its divisors is an integer number (55912267710).

Almost surely, 2^211224122443 is an apocalyptic number.

211224122443 is a deficient number, since it is larger than the sum of its proper divisors (12424948397).

211224122443 is a wasteful number, since it uses less digits than its factorization.

211224122443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424948396.

The product of its digits is 6144, while the sum is 28.

Adding to 211224122443 its reverse (344221422112), we get a palindrome (555445544555).

The spelling of 211224122443 in words is "two hundred eleven billion, two hundred twenty-four million, one hundred twenty-two thousand, four hundred forty-three".