12211121002212 has 288 divisors, whose sum is σ = 35260761279744. Its totient is φ = 3527025638400.

The previous prime is 12211121002207. The next prime is 12211121002219. The reversal of 12211121002212 is 21220012111221.

12211121002212 is a `hidden beast` number, since 1 + 221 + 11 + 210 + 0 + 221 + 2 = 666.

It is a super-2 number, since 2×12211121002212² (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 not an unprimeable number, because it can be changed into a prime (12211121002219) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4186190178 + ... + 4186193094.

It is an arithmetic number, because the mean of its divisors is an integer number (122433198888).

Almost surely, 2^{12211121002212} is an apocalyptic number.

12211121002212 is a gapful number since it is divisible by the number (12) 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 12211121002212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17630380639872).

12211121002212 is an abundant number, since it is smaller than the sum of its proper divisors (23049640277532).

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

12211121002212 is a wasteful number, since it uses less digits than its factorization.

12211121002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211121002212 its reverse (21220012111221), we get a palindrome (33431133113433).

The spelling of 12211121002212 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two thousand, two hundred twelve".