12321022000 has 160 divisors (see below), whose sum is σ = 36051799680. Its totient is φ = 3975782400.

The previous prime is 12321021997. The next prime is 12321022001. The reversal of 12321022000 is 22012321.

It is not an unprimeable number, because it can be changed into a prime (12321022001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212116 + ... + 263884.

It is an arithmetic number, because the mean of its divisors is an integer number (225323748).

Almost surely, 2^12321022000 is an apocalyptic number.

12321022000 is a gapful number since it is divisible by the number (10) 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 12321022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18025899840).

12321022000 is an abundant number, since it is smaller than the sum of its proper divisors (23730777680).

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

12321022000 is a wasteful number, since it uses less digits than its factorization.

12321022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51816 (or 51800 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12321022000 its reverse (22012321), we get a palindrome (12343034321).

The spelling of 12321022000 in words is "twelve billion, three hundred twenty-one million, twenty-two thousand".