12212123443 has 8 divisors (see below), whose sum is σ = 13219662848. Its totient is φ = 11214319104.

The previous prime is 12212123311. The next prime is 12212123461. The reversal of 12212123443 is 34432121221.

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 12212123443 - 2¹⁷ = 12211992371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212121443) 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, 2431155 + ... + 2436172.

It is an arithmetic number, because the mean of its divisors is an integer number (1652457856).

Almost surely, 2^12212123443 is an apocalyptic number.

12212123443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12212123443 is a deficient number, since it is larger than the sum of its proper divisors (1007539405).

12212123443 is a wasteful number, since it uses less digits than its factorization.

12212123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867533.

The product of its digits is 2304, while the sum is 25.

Adding to 12212123443 its reverse (34432121221), we get a palindrome (46644244664).

The spelling of 12212123443 in words is "twelve billion, two hundred twelve million, one hundred twenty-three thousand, four hundred forty-three".