11321412312 has 128 divisors (see below), whose sum is σ = 33770880000. Its totient is φ = 3094350336.

The previous prime is 11321412241. The next prime is 11321412331. The reversal of 11321412312 is 21321412311.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520389 + ... + 541707.

It is an arithmetic number, because the mean of its divisors is an integer number (263835000).

Almost surely, 2^11321412312 is an apocalyptic number.

11321412312 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 11321412312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16885440000).

11321412312 is an abundant number, since it is smaller than the sum of its proper divisors (22449467688).

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

11321412312 is a wasteful number, since it uses less digits than its factorization.

11321412312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21473 (or 21469 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 11321412312 its reverse (21321412311), we get a palindrome (32642824623).

Subtracting 11321412312 from its reverse (21321412311), we obtain a palindrome (9999999999).

The spelling of 11321412312 in words is "eleven billion, three hundred twenty-one million, four hundred twelve thousand, three hundred twelve".