201111243304443 has 4 divisors (see below), whose sum is σ = 268148324405928. Its totient is φ = 134074162202960.

The previous prime is 201111243304381. The next prime is 201111243304463. The reversal of 201111243304443 is 344403342111102.

It is a happy number.

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 201111243304443 - 2¹⁷ = 201111243173371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111243304463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33518540550738 + ... + 33518540550743.

It is an arithmetic number, because the mean of its divisors is an integer number (67037081101482).

Almost surely, 2^{201111243304443} is an apocalyptic number.

201111243304443 is a deficient number, since it is larger than the sum of its proper divisors (67037081101485).

201111243304443 is an equidigital number, since it uses as much as digits as its factorization.

201111243304443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67037081101484.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 201111243304443 its reverse (344403342111102), we get a palindrome (545514585415545).

The spelling of 201111243304443 in words is "two hundred one trillion, one hundred eleven billion, two hundred forty-three million, three hundred four thousand, four hundred forty-three".