12334416721 has 4 divisors (see below), whose sum is σ = 13455727344. Its totient is φ = 11213106100.

The previous prime is 12334416719. The next prime is 12334416727. The reversal of 12334416721 is 12761443321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12761443321 = 11 ⋅1160131211.

It is a cyclic number.

It is not a de Polignac number, because 12334416721 - 2¹ = 12334416719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12334416727) 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, 560655295 + ... + 560655316.

It is an arithmetic number, because the mean of its divisors is an integer number (3363931836).

Almost surely, 2^12334416721 is an apocalyptic number.

12334416721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12334416721 is a deficient number, since it is larger than the sum of its proper divisors (1121310623).

12334416721 is a wasteful number, since it uses less digits than its factorization.

12334416721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121310622.

The product of its digits is 24192, while the sum is 34.

The spelling of 12334416721 in words is "twelve billion, three hundred thirty-four million, four hundred sixteen thousand, seven hundred twenty-one".