12425111221 has 8 divisors (see below), whose sum is σ = 12966450624. Its totient is φ = 11883864960.

The previous prime is 12425111197. The next prime is 12425111227. The reversal of 12425111221 is 12211152421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12425111221 - 2⁵ = 12425111189 is a prime.

It is a super-2 number, since 2×12425111221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12425111192 and 12425111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12425111227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495301 + ... + 519781.

It is an arithmetic number, because the mean of its divisors is an integer number (1620806328).

Almost surely, 2^12425111221 is an apocalyptic number.

It is an amenable number.

12425111221 is a deficient number, since it is larger than the sum of its proper divisors (541339403).

12425111221 is a wasteful number, since it uses less digits than its factorization.

12425111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46571.

The product of its digits is 320, while the sum is 22.

Adding to 12425111221 its reverse (12211152421), we get a palindrome (24636263642).

The spelling of 12425111221 in words is "twelve billion, four hundred twenty-five million, one hundred eleven thousand, two hundred twenty-one".