12101125225 has 24 divisors (see below), whose sum is σ = 17158643840. Its totient is φ = 8293259520.

The previous prime is 12101125207. The next prime is 12101125237. The reversal of 12101125225 is 52252110121.

It is a happy number.

It is not a de Polignac number, because 12101125225 - 2⁷ = 12101125097 is a prime.

It is a super-2 number, since 2×12101125225² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12101125196 and 12101125205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309316 + ... + 346234.

Almost surely, 2^12101125225 is an apocalyptic number.

It is an amenable number.

12101125225 is a deficient number, since it is larger than the sum of its proper divisors (5057518615).

12101125225 is a wasteful number, since it uses less digits than its factorization.

12101125225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38809 (or 38804 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 12101125225 its reverse (52252110121), we get a palindrome (64353235346).

The spelling of 12101125225 in words is "twelve billion, one hundred one million, one hundred twenty-five thousand, two hundred twenty-five".