12125122 has 8 divisors (see below), whose sum is σ = 18679356. Its totient is φ = 5898672.

The previous prime is 12125101. The next prime is 12125129. The reversal of 12125122 is 22152121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9066121 + 3059001 = 3011^2 + 1749^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12125096 and 12125105.

It is not an unprimeable number, because it can be changed into a prime (12125129) 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, 81853 + ... + 82000.

Almost surely, 2^12125122 is an apocalyptic number.

12125122 is a deficient number, since it is larger than the sum of its proper divisors (6554234).

12125122 is a wasteful number, since it uses less digits than its factorization.

12125122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163892.

The product of its digits is 80, while the sum is 16.

The square root of 12125122 is about 3482.1145874310. The cubic root of 12125122 is about 229.7358151281.

Adding to 12125122 its reverse (22152121), we get a palindrome (34277243).

The spelling of 12125122 in words is "twelve million, one hundred twenty-five thousand, one hundred twenty-two".