13012233312 has 96 divisors (see below), whose sum is σ = 36884520288. Its totient is φ = 3992887296.

The previous prime is 13012233301. The next prime is 13012233359. The reversal of 13012233312 is 21333221031.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451528 + ... + 479480.

It is an arithmetic number, because the mean of its divisors is an integer number (384213753).

Almost surely, 2^13012233312 is an apocalyptic number.

13012233312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012233312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18442260144).

13012233312 is an abundant number, since it is smaller than the sum of its proper divisors (23872286976).

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

13012233312 is a wasteful number, since it uses less digits than its factorization.

13012233312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28352 (or 28344 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13012233312 its reverse (21333221031), we get a palindrome (34345454343).

The spelling of 13012233312 in words is "thirteen billion, twelve million, two hundred thirty-three thousand, three hundred twelve".