1222405624 has 16 divisors (see below), whose sum is σ = 2500375320. Its totient is φ = 555638880.

The previous prime is 1222405619. The next prime is 1222405627. The reversal of 1222405624 is 4265042221.

It is a junction number, because it is equal to n+sod(n) for n = 1222405592 and 1222405601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222405627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6945399 + ... + 6945574.

Almost surely, 2^1222405624 is an apocalyptic number.

It is an amenable number.

1222405624 is an abundant number, since it is smaller than the sum of its proper divisors (1277969696).

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

1222405624 is a wasteful number, since it uses less digits than its factorization.

1222405624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890990 (or 13890986 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1222405624 is about 34962.9178416219. The cubic root of 1222405624 is about 1069.2315861874.

Adding to 1222405624 its reverse (4265042221), we get a palindrome (5487447845).

The spelling of 1222405624 in words is "one billion, two hundred twenty-two million, four hundred five thousand, six hundred twenty-four".