2212102111212 has 72 divisors (see below), whose sum is σ = 6396704330016. Its totient is φ = 631417261824.

The previous prime is 2212102111211. The next prime is 2212102111229. The reversal of 2212102111212 is 2121112012122.

2212102111212 is a `hidden beast` number, since 221 + 21 + 0 + 211 + 1 + 212 = 666.

It is a super-2 number, since 2×2212102111212² (a number of 25 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 (2212102111211) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3988563 + ... + 4509194.

Almost surely, 2^{2212102111212} is an apocalyptic number.

It is an amenable number.

2212102111212 is an abundant number, since it is smaller than the sum of its proper divisors (4184602218804).

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

2212102111212 is a wasteful number, since it uses less digits than its factorization.

2212102111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8498807 (or 8498802 counting only the distinct ones).

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

Adding to 2212102111212 its reverse (2121112012122), we get a palindrome (4333214123334).

The spelling of 2212102111212 in words is "two trillion, two hundred twelve billion, one hundred two million, one hundred eleven thousand, two hundred twelve".