12211211111000 has 128 divisors (see below), whose sum is σ = 31181393655360. Its totient is φ = 4439086848000.

The previous prime is 12211211110979. The next prime is 12211211111111. The reversal of 12211211111000 is 11111211221.

It is a super-2 number, since 2×12211211111000² (a number of 27 digits) contains 22 as substring.

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, 36275462 + ... + 36610538.

Almost surely, 2^{12211211111000} is an apocalyptic number.

12211211111000 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 12211211111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15590696827680).

12211211111000 is an abundant number, since it is smaller than the sum of its proper divisors (18970182544360).

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

12211211111000 is a wasteful number, since it uses less digits than its factorization.

12211211111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338422 (or 338408 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12211211111000 its reverse (11111211221), we get a palindrome (12222322322221).

The spelling of 12211211111000 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, one hundred eleven thousand".