1212311213032 has 144 divisors (see below), whose sum is σ = 2513187499500. Its totient is φ = 547979120640.

The previous prime is 1212311212997. The next prime is 1212311213123. The reversal of 1212311213032 is 2303121132121.

It can be written as a sum of positive squares in 6 ways, for example, as 961015538596 + 251295674436 = 980314^2 + 501294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212311212994 and 1212311213012.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 260765844 + ... + 260770492.

Almost surely, 2^{1212311213032} is an apocalyptic number.

It is an amenable number.

1212311213032 is an abundant number, since it is smaller than the sum of its proper divisors (1300876286468).

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

1212311213032 is a wasteful number, since it uses less digits than its factorization.

1212311213032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1212311213032 its reverse (2303121132121), we get a palindrome (3515432345153).

The spelling of 1212311213032 in words is "one trillion, two hundred twelve billion, three hundred eleven million, two hundred thirteen thousand, thirty-two".