12211211112212 has 48 divisors (see below), whose sum is σ = 24907527120000. Its totient is φ = 5129933468544.

The previous prime is 12211211112197. The next prime is 12211211112251. The reversal of 12211211112212 is 21221111211221.

It is a happy number.

It is a super-2 number, since 2×12211211112212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10013387 + ... + 11166482.

It is an arithmetic number, because the mean of its divisors is an integer number (518906815000).

Almost surely, 2^{12211211112212} is an apocalyptic number.

It is an amenable number.

12211211112212 is an abundant number, since it is smaller than the sum of its proper divisors (12696316007788).

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

12211211112212 is a wasteful number, since it uses less digits than its factorization.

12211211112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180288 (or 21180286 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 12211211112212 its reverse (21221111211221), we get a palindrome (33432322323433).

Subtracting 12211211112212 from its reverse (21221111211221), we obtain a palindrome (9009900099009).

The spelling of 12211211112212 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, one hundred twelve thousand, two hundred twelve".