1212043328 has 28 divisors (see below), whose sum is σ = 2509723200. Its totient is φ = 579672192.

The previous prime is 1212043321. The next prime is 1212043337. The reversal of 1212043328 is 8233402121.

It is a junction number, because it is equal to n+sod(n) for n = 1212043297 and 1212043306.

It is not an unprimeable number, because it can be changed into a prime (1212043321) 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, 410228 + ... + 413171.

Almost surely, 2^1212043328 is an apocalyptic number.

It is an amenable number.

1212043328 is an abundant number, since it is smaller than the sum of its proper divisors (1297679872).

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

1212043328 is an equidigital number, since it uses as much as digits as its factorization.

1212043328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823434 (or 823424 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1212043328 is about 34814.4126476378. The cubic root of 1212043328 is about 1066.2017272324.

Adding to 1212043328 its reverse (8233402121), we get a palindrome (9445445449).

The spelling of 1212043328 in words is "one billion, two hundred twelve million, forty-three thousand, three hundred twenty-eight".