12751222 has 12 divisors (see below), whose sum is σ = 21024108. Its totient is φ = 5795900.

The previous prime is 12751201. The next prime is 12751231. The reversal of 12751222 is 22215721.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12751193 and 12751202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26104 + ... + 26587.

It is an arithmetic number, because the mean of its divisors is an integer number (1752009).

Almost surely, 2^12751222 is an apocalyptic number.

12751222 is a deficient number, since it is larger than the sum of its proper divisors (8272886).

12751222 is a wasteful number, since it uses less digits than its factorization.

12751222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52715 (or 52704 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 12751222 is about 3570.8853243979. The cubic root of 12751222 is about 233.6238996901.

Adding to 12751222 its reverse (22215721), we get a palindrome (34966943).

The spelling of 12751222 in words is "twelve million, seven hundred fifty-one thousand, two hundred twenty-two".