12242473121 has 4 divisors (see below), whose sum is σ = 12268032000. Its totient is φ = 12216914244.

The previous prime is 12242473057. The next prime is 12242473169. The reversal of 12242473121 is 12137424221.

It is a happy number.

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 12242473121 - 2⁶ = 12242473057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12242473171) 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, 12778721 + ... + 12779678.

It is an arithmetic number, because the mean of its divisors is an integer number (3067008000).

Almost surely, 2^12242473121 is an apocalyptic number.

It is an amenable number.

12242473121 is a deficient number, since it is larger than the sum of its proper divisors (25558879).

12242473121 is an equidigital number, since it uses as much as digits as its factorization.

12242473121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25558878.

The product of its digits is 5376, while the sum is 29.

Adding to 12242473121 its reverse (12137424221), we get a palindrome (24379897342).

The spelling of 12242473121 in words is "twelve billion, two hundred forty-two million, four hundred seventy-three thousand, one hundred twenty-one".