12122312220000 has 720 divisors, whose sum is σ = 44407966114512. Its totient is φ = 3133416960000.

The previous prime is 12122312219993. The next prime is 12122312220079. The reversal of 12122312220000 is 2221322121.

12122312220000 is a `hidden beast` number, since 1 + 212 + 231 + 2 + 220 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×12122312220000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1844816715 + ... + 1844823285.

Almost surely, 2^{12122312220000} is an apocalyptic number.

12122312220000 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 12122312220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22203983057256).

12122312220000 is an abundant number, since it is smaller than the sum of its proper divisors (32285653894512).

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

12122312220000 is a wasteful number, since it uses less digits than its factorization.

12122312220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921 (or 6895 counting only the distinct ones).

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

Adding to 12122312220000 its reverse (2221322121), we get a palindrome (12124533542121).

The spelling of 12122312220000 in words is "twelve trillion, one hundred twenty-two billion, three hundred twelve million, two hundred twenty thousand".