12212125 has 16 divisors (see below), whose sum is σ = 15365376. Its totient is φ = 9690000.

The previous prime is 12212119. The next prime is 12212131. The reversal of 12212125 is 52121221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12212119) and next prime (12212131).

It is not a de Polignac number, because 12212125 - 2¹⁵ = 12179357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212099 and 12212108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18552 + ... + 19198.

It is an arithmetic number, because the mean of its divisors is an integer number (960336).

Almost surely, 2^12212125 is an apocalyptic number.

It is an amenable number.

12212125 is a deficient number, since it is larger than the sum of its proper divisors (3153251).

12212125 is an equidigital number, since it uses as much as digits as its factorization.

12212125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 803 counting only the distinct ones).

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

The square root of 12212125 is about 3494.5850969750. The cubic root of 12212125 is about 230.2839907252.

Adding to 12212125 its reverse (52121221), we get a palindrome (64333346).

The spelling of 12212125 in words is "twelve million, two hundred twelve thousand, one hundred twenty-five".