12222125 has 8 divisors (see below), whose sum is σ = 15253368. Its totient is φ = 9777600.

The previous prime is 12222121. The next prime is 12222127. The reversal of 12222125 is 52122221.

It can be written as a sum of positive squares in 4 ways, for example, as 1378276 + 10843849 = 1174^2 + 3293^2 .

It is not a de Polignac number, because 12222125 - 2² = 12222121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222121) 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, 48764 + ... + 49013.

It is an arithmetic number, because the mean of its divisors is an integer number (1906671).

Almost surely, 2^12222125 is an apocalyptic number.

It is an amenable number.

12222125 is a deficient number, since it is larger than the sum of its proper divisors (3031243).

12222125 is an frugal number, since it uses more digits than its factorization.

12222125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97792 (or 97782 counting only the distinct ones).

The product of its digits is 160, while the sum is 17.

The square root of 12222125 is about 3496.0155892101. The cubic root of 12222125 is about 230.3468302290.

Adding to 12222125 its reverse (52122221), we get a palindrome (64344346).

The spelling of 12222125 in words is "twelve million, two hundred twenty-two thousand, one hundred twenty-five".