13021203312 has 120 divisors (see below), whose sum is σ = 41553059184. Its totient is φ = 3770836992.

The previous prime is 13021203287. The next prime is 13021203317. The reversal of 13021203312 is 21330212031.

13021203312 is a `hidden beast` number, since 130 + 21 + 203 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021203317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172758 + ... + 236405.

Almost surely, 2^13021203312 is an apocalyptic number.

13021203312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13021203312 is an abundant number, since it is smaller than the sum of its proper divisors (28531855872).

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

13021203312 is a wasteful number, since it uses less digits than its factorization.

13021203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409207 (or 409198 counting only the distinct ones).

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

Adding to 13021203312 its reverse (21330212031), we get a palindrome (34351415343).

The spelling of 13021203312 in words is "thirteen billion, twenty-one million, two hundred three thousand, three hundred twelve".