12211320443 has 8 divisors (see below), whose sum is σ = 13981312512. Its totient is φ = 10447707816.

The previous prime is 12211320431. The next prime is 12211320461. The reversal of 12211320443 is 34402311221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12211320443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211322443) 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, 1590755 + ... + 1598412.

It is an arithmetic number, because the mean of its divisors is an integer number (1747664064).

Almost surely, 2^12211320443 is an apocalyptic number.

12211320443 is a deficient number, since it is larger than the sum of its proper divisors (1769992069).

12211320443 is an equidigital number, since it uses as much as digits as its factorization.

12211320443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189721.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12211320443 its reverse (34402311221), we get a palindrome (46613631664).

The spelling of 12211320443 in words is "twelve billion, two hundred eleven million, three hundred twenty thousand, four hundred forty-three".