1322012225 has 12 divisors (see below), whose sum is σ = 1735724844. Its totient is φ = 995397120.

The previous prime is 1322012203. The next prime is 1322012227. The reversal of 1322012225 is 5222102231.

It can be written as a sum of positive squares in 6 ways, for example, as 35344 + 1321976881 = 188^2 + 36359^2 .

It is not a de Polignac number, because 1322012225 - 2⁶ = 1322012161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322012197 and 1322012206.

It is not an unprimeable number, because it can be changed into a prime (1322012227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1554884 + ... + 1555733.

It is an arithmetic number, because the mean of its divisors is an integer number (144643737).

Almost surely, 2^1322012225 is an apocalyptic number.

It is an amenable number.

1322012225 is a deficient number, since it is larger than the sum of its proper divisors (413712619).

1322012225 is a wasteful number, since it uses less digits than its factorization.

1322012225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110644 (or 3110639 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1322012225 is about 36359.4860387217. The cubic root of 1322012225 is about 1097.5184348029.

Adding to 1322012225 its reverse (5222102231), we get a palindrome (6544114456).

The spelling of 1322012225 in words is "one billion, three hundred twenty-two million, twelve thousand, two hundred twenty-five".