12251322 has 24 divisors (see below), whose sum is σ = 28106676. Its totient is φ = 3843456.

The previous prime is 12251299. The next prime is 12251357. The reversal of 12251322 is 22315221.

It can be written as a sum of positive squares in 2 ways, for example, as 11229201 + 1022121 = 3351^2 + 1011^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12251295 and 12251304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19713 + ... + 20324.

Almost surely, 2^12251322 is an apocalyptic number.

12251322 is an abundant number, since it is smaller than the sum of its proper divisors (15855354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12251322 is a wasteful number, since it uses less digits than its factorization.

12251322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40062 (or 40059 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12251322 is about 3500.1888520478. The cubic root of 12251322 is about 230.5301068173.

Adding to 12251322 its reverse (22315221), we get a palindrome (34566543).

The spelling of 12251322 in words is "twelve million, two hundred fifty-one thousand, three hundred twenty-two".