12243221123 has 16 divisors (see below), whose sum is σ = 14238654144. Its totient is φ = 10309800960.

The previous prime is 12243221101. The next prime is 12243221129. The reversal of 12243221123 is 32112234221.

It is a cyclic number.

It is not a de Polignac number, because 12243221123 - 2⁶ = 12243221059 is a prime.

It is a super-3 number, since 3×12243221123³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12243221129) 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, 349211 + ... + 382667.

It is an arithmetic number, because the mean of its divisors is an integer number (889915884).

Almost surely, 2^12243221123 is an apocalyptic number.

12243221123 is a deficient number, since it is larger than the sum of its proper divisors (1995433021).

12243221123 is an equidigital number, since it uses as much as digits as its factorization.

12243221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34382.

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

Adding to 12243221123 its reverse (32112234221), we get a palindrome (44355455344).

The spelling of 12243221123 in words is "twelve billion, two hundred forty-three million, two hundred twenty-one thousand, one hundred twenty-three".