13321212202128 has 40 divisors (see below), whose sum is σ = 34413265840576. Its totient is φ = 4440386736000.

The previous prime is 13321212202127. The next prime is 13321212202139. The reversal of 13321212202128 is 82120221212331.

It is a junction number, because it is equal to n+sod(n) for n = 13321212202095 and 13321212202104.

It is not an unprimeable number, because it can be changed into a prime (13321212202127) by changing a digit.

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, 19627653 + ... + 20295003.

Almost surely, 2^{13321212202128} is an apocalyptic number.

It is an amenable number.

13321212202128 is an abundant number, since it is smaller than the sum of its proper divisors (21092053638448).

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

13321212202128 is a wasteful number, since it uses less digits than its factorization.

13321212202128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083223 (or 1083217 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 13321212202128 its reverse (82120221212331), we get a palindrome (95441433414459).

The spelling of 13321212202128 in words is "thirteen trillion, three hundred twenty-one billion, two hundred twelve million, two hundred two thousand, one hundred twenty-eight".