12211122222000 has 320 divisors, whose sum is σ = 47107798657920. Its totient is φ = 3005814528000.

The previous prime is 12211122221983. The next prime is 12211122222011. The reversal of 12211122222000 is 22222111221.

It is a happy number.

12211122222000 is a `hidden beast` number, since 1 + 221 + 1 + 1 + 222 + 220 + 0 + 0 = 666.

It is a super-2 number, since 2×12211122222000² (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7995381 + ... + 9399380.

It is an arithmetic number, because the mean of its divisors is an integer number (147211870806).

Almost surely, 2^{12211122222000} is an apocalyptic number.

12211122222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211122222000 is an abundant number, since it is smaller than the sum of its proper divisors (34896676435920).

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

12211122222000 is a wasteful number, since it uses less digits than its factorization.

12211122222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17394806 (or 17394784 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12211122222000 its reverse (22222111221), we get a palindrome (12233344333221).

The spelling of 12211122222000 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand".