12322001212220 has 96 divisors (see below), whose sum is σ = 30885119935488. Its totient is φ = 4037528259072.

The previous prime is 12322001212219. The next prime is 12322001212259. The reversal of 12322001212220 is 2221210022321.

It is a super-2 number, since 2×12322001212220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12322001212192 and 12322001212201.

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, 2099672 + ... + 5390048.

It is an arithmetic number, because the mean of its divisors is an integer number (321719999328).

Almost surely, 2^{12322001212220} is an apocalyptic number.

12322001212220 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 12322001212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15442559967744).

12322001212220 is an abundant number, since it is smaller than the sum of its proper divisors (18563118723268).

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

12322001212220 is a wasteful number, since it uses less digits than its factorization.

12322001212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291579 (or 3291577 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12322001212220 its reverse (2221210022321), we get a palindrome (14543211234541).

The spelling of 12322001212220 in words is "twelve trillion, three hundred twenty-two billion, one million, two hundred twelve thousand, two hundred twenty".