12021322032 has 30 divisors (see below), whose sum is σ = 33643005812. Its totient is φ = 4007107296.

The previous prime is 12021322031. The next prime is 12021322043. The reversal of 12021322032 is 23022312021.

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 = 12021321996 and 12021322014.

It is not an unprimeable number, because it can be changed into a prime (12021322031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41740558 + ... + 41740845.

Almost surely, 2^12021322032 is an apocalyptic number.

12021322032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021322032 is an abundant number, since it is smaller than the sum of its proper divisors (21621683780).

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

12021322032 is a wasteful number, since it uses less digits than its factorization.

12021322032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83481417 (or 83481408 counting only the distinct ones).

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

Adding to 12021322032 its reverse (23022312021), we get a palindrome (35043634053).

The spelling of 12021322032 in words is "twelve billion, twenty-one million, three hundred twenty-two thousand, thirty-two".