1321020202132 has 12 divisors (see below), whose sum is σ = 2320315928896. Its totient is φ = 658072793880.

The previous prime is 1321020202111. The next prime is 1321020202141. The reversal of 1321020202132 is 2312020201231.

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 3 ways as a sum of consecutive naturals, for example, 609325578 + ... + 609327745.

Almost surely, 2^{1321020202132} is an apocalyptic number.

It is an amenable number.

1321020202132 is a deficient number, since it is larger than the sum of its proper divisors (999295726764).

1321020202132 is a wasteful number, since it uses less digits than its factorization.

1321020202132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218653598 (or 1218653596 counting only the distinct ones).

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

Adding to 1321020202132 its reverse (2312020201231), we get a palindrome (3633040403363).

Subtracting 1321020202132 from its reverse (2312020201231), we obtain a palindrome (990999999099).

The spelling of 1321020202132 in words is "one trillion, three hundred twenty-one billion, twenty million, two hundred two thousand, one hundred thirty-two".