1212444424 has 8 divisors (see below), whose sum is σ = 2273333310. Its totient is φ = 606222208.

The previous prime is 1212444361. The next prime is 1212444433. The reversal of 1212444424 is 4244442121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1209787524 + 2656900 = 34782^2 + 1630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1212444392 and 1212444401.

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 as a sum of consecutive naturals, namely, 75777769 + ... + 75777784.

Almost surely, 2^1212444424 is an apocalyptic number.

It is an amenable number.

1212444424 is a deficient number, since it is larger than the sum of its proper divisors (1060888886).

1212444424 is a wasteful number, since it uses less digits than its factorization.

1212444424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151555559 (or 151555555 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The square root of 1212444424 is about 34820.1726589631. The cubic root of 1212444424 is about 1066.3193253615.

Adding to 1212444424 its reverse (4244442121), we get a palindrome (5456886545).

The spelling of 1212444424 in words is "one billion, two hundred twelve million, four hundred forty-four thousand, four hundred twenty-four".