13012033221 has 24 divisors (see below), whose sum is σ = 20510624160. Its totient is φ = 7883460000.

The previous prime is 13012033213. The next prime is 13012033231. The reversal of 13012033221 is 12233021031.

It is not a de Polignac number, because 13012033221 - 2³ = 13012033213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13012033194 and 13012033203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012033231) 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 23 ways as a sum of consecutive naturals, for example, 301635 + ... + 342063.

It is an arithmetic number, because the mean of its divisors is an integer number (854609340).

Almost surely, 2^13012033221 is an apocalyptic number.

13012033221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13012033221 is a deficient number, since it is larger than the sum of its proper divisors (7498590939).

13012033221 is a wasteful number, since it uses less digits than its factorization.

13012033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43697 (or 43694 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13012033221 its reverse (12233021031), we get a palindrome (25245054252).

The spelling of 13012033221 in words is "thirteen billion, twelve million, thirty-three thousand, two hundred twenty-one".