1121212424 has 16 divisors (see below), whose sum is σ = 2225936700. Its totient is φ = 527629312.

The previous prime is 1121212423. The next prime is 1121212429. The reversal of 1121212424 is 4242121211.

It can be written as a sum of positive squares in 2 ways, for example, as 1121044324 + 168100 = 33482^2 + 410^2 .

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 = 1121212396 and 1121212405.

It is not an unprimeable number, because it can be changed into a prime (1121212423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4121969 + ... + 4122240.

Almost surely, 2^1121212424 is an apocalyptic number.

It is an amenable number.

1121212424 is a deficient number, since it is larger than the sum of its proper divisors (1104724276).

1121212424 is a wasteful number, since it uses less digits than its factorization.

1121212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244232 (or 8244228 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 1121212424 is about 33484.5102099463. The cubic root of 1121212424 is about 1038.8734176417.

Adding to 1121212424 its reverse (4242121211), we get a palindrome (5363333635).

The spelling of 1121212424 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, four hundred twenty-four".