12320221122 has 64 divisors (see below), whose sum is σ = 30057667200. Its totient is φ = 3709592640.

The previous prime is 12320221103. The next prime is 12320221163. The reversal of 12320221122 is 22112202321.

12320221122 is a `hidden beast` number, since 1 + 2 + 320 + 221 + 122 = 666.

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 = 12320221095 and 12320221104.

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, 27204 + ... + 159312.

It is an arithmetic number, because the mean of its divisors is an integer number (469651050).

Almost surely, 2^12320221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12320221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15028833600).

12320221122 is an abundant number, since it is smaller than the sum of its proper divisors (17737446078).

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

12320221122 is a wasteful number, since it uses less digits than its factorization.

12320221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132288 (or 132282 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12320221122 its reverse (22112202321), we get a palindrome (34432423443).

The spelling of 12320221122 in words is "twelve billion, three hundred twenty million, two hundred twenty-one thousand, one hundred twenty-two".