1312202021232 has 40 divisors (see below), whose sum is σ = 3389902154896. Its totient is φ = 437394617856.

The previous prime is 1312202021201. The next prime is 1312202021279. The reversal of 1312202021232 is 2321202022131.

It is a junction number, because it is equal to n+sod(n) for n = 1312202021199 and 1312202021208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4523838 + ... + 4805154.

Almost surely, 2^{1312202021232} is an apocalyptic number.

1312202021232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312202021232 is an abundant number, since it is smaller than the sum of its proper divisors (2077700133664).

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

1312202021232 is a wasteful number, since it uses less digits than its factorization.

1312202021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378505 (or 378499 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1312202021232 its reverse (2321202022131), we get a palindrome (3633404043363).

The spelling of 1312202021232 in words is "one trillion, three hundred twelve billion, two hundred two million, twenty-one thousand, two hundred thirty-two".