11232021312 has 168 divisors, whose sum is σ = 34244051400. Its totient is φ = 3507683328.

The previous prime is 11232021287. The next prime is 11232021373. The reversal of 11232021312 is 21312023211.

11232021312 is a `hidden beast` number, since 1 + 12 + 320 + 21 + 312 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5628600576 + 5603420736 = 75024^2 + 74856^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2239864 + ... + 2244872.

Almost surely, 2^11232021312 is an apocalyptic number.

11232021312 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 11232021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17122025700).

11232021312 is an abundant number, since it is smaller than the sum of its proper divisors (23012030088).

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

11232021312 is a wasteful number, since it uses less digits than its factorization.

11232021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11232021312 its reverse (21312023211), we get a palindrome (32544044523).

The spelling of 11232021312 in words is "eleven billion, two hundred thirty-two million, twenty-one thousand, three hundred twelve".