12321122000 has 160 divisors (see below), whose sum is σ = 33117237504. Its totient is φ = 4395456000.

The previous prime is 12321121993. The next prime is 12321122029. The reversal of 12321122000 is 22112321.

It is a happy number.

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, 1160717 + ... + 1171283.

Almost surely, 2^12321122000 is an apocalyptic number.

12321122000 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 12321122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16558618752).

12321122000 is an abundant number, since it is smaller than the sum of its proper divisors (20796115504).

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

12321122000 is a wasteful number, since it uses less digits than its factorization.

12321122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12321122000 its reverse (22112321), we get a palindrome (12343234321).

The spelling of 12321122000 in words is "twelve billion, three hundred twenty-one million, one hundred twenty-two thousand".