1212312232 has 8 divisors (see below), whose sum is σ = 2273085450. Its totient is φ = 606156112.

The previous prime is 1212312223. The next prime is 1212312239. The reversal of 1212312232 is 2322132121.

It can be written as a sum of positive squares in only one way, i.e., 976812516 + 235499716 = 31254^2 + 15346^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1212312239) by changing a digit.

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, 75769507 + ... + 75769522.

Almost surely, 2^1212312232 is an apocalyptic number.

It is an amenable number.

1212312232 is a deficient number, since it is larger than the sum of its proper divisors (1060773218).

1212312232 is a wasteful number, since it uses less digits than its factorization.

1212312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151539035 (or 151539031 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1212312232 is about 34818.2743972185. The cubic root of 1212312232 is about 1066.2805705934.

Adding to 1212312232 its reverse (2322132121), we get a palindrome (3534444353).

The spelling of 1212312232 in words is "one billion, two hundred twelve million, three hundred twelve thousand, two hundred thirty-two".