12201321443 has 16 divisors (see below), whose sum is σ = 12546842784. Its totient is φ = 11860853760.

The previous prime is 12201321439. The next prime is 12201321499. The reversal of 12201321443 is 34412310221.

It is a cyclic number.

It is not a de Polignac number, because 12201321443 - 2² = 12201321439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201371443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7318496 + ... + 7320162.

It is an arithmetic number, because the mean of its divisors is an integer number (784177674).

Almost surely, 2^12201321443 is an apocalyptic number.

12201321443 is a deficient number, since it is larger than the sum of its proper divisors (345521341).

12201321443 is a wasteful number, since it uses less digits than its factorization.

12201321443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

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

Adding to 12201321443 its reverse (34412310221), we get a palindrome (46613631664).

The spelling of 12201321443 in words is "twelve billion, two hundred one million, three hundred twenty-one thousand, four hundred forty-three".