12423221201 has 4 divisors (see below), whose sum is σ = 12823970304. Its totient is φ = 12022472100.

The previous prime is 12423221183. The next prime is 12423221221. The reversal of 12423221201 is 10212232421.

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.

It is a cyclic number.

It is not a de Polignac number, because 12423221201 - 2¹⁸ = 12422959057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423221221) 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, 200374505 + ... + 200374566.

It is an arithmetic number, because the mean of its divisors is an integer number (3205992576).

Almost surely, 2^12423221201 is an apocalyptic number.

It is an amenable number.

12423221201 is a deficient number, since it is larger than the sum of its proper divisors (400749103).

12423221201 is an equidigital number, since it uses as much as digits as its factorization.

12423221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400749102.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12423221201 its reverse (10212232421), we get a palindrome (22635453622).

The spelling of 12423221201 in words is "twelve billion, four hundred twenty-three million, two hundred twenty-one thousand, two hundred one".