12023212032 has 144 divisors (see below), whose sum is σ = 37397161620. Its totient is φ = 3699376128.

The previous prime is 12023212013. The next prime is 12023212043. The reversal of 12023212032 is 23021232021.

It can be written as a sum of positive squares in 2 ways, for example, as 11581203456 + 442008576 = 107616^2 + 21024^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a junction number, because it is equal to n+sod(n) for n = 12023211996 and 12023212014.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214528 + ... + 264704.

Almost surely, 2^12023212032 is an apocalyptic number.

12023212032 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 12023212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18698580810).

12023212032 is an abundant number, since it is smaller than the sum of its proper divisors (25373949588).

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

12023212032 is a wasteful number, since it uses less digits than its factorization.

12023212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50218 (or 50195 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12023212032 its reverse (23021232021), we get a palindrome (35044444053).

The spelling of 12023212032 in words is "twelve billion, twenty-three million, two hundred twelve thousand, thirty-two".