2212112121212 has 48 divisors (see below), whose sum is σ = 4658016464640. Its totient is φ = 897969825792.

The previous prime is 2212112121211. The next prime is 2212112121227. The reversal of 2212112121212 is 2121212112122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212112121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2239883 + ... + 3072669.

It is an arithmetic number, because the mean of its divisors is an integer number (97042009680).

Almost surely, 2^{2212112121212} is an apocalyptic number.

It is an amenable number.

2212112121212 is an abundant number, since it is smaller than the sum of its proper divisors (2445904343428).

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

2212112121212 is a wasteful number, since it uses less digits than its factorization.

2212112121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837810 (or 837808 counting only the distinct ones).

The product of its digits is 128, while the sum is 20.

Adding to 2212112121212 its reverse (2121212112122), we get a palindrome (4333324233334).

The spelling of 2212112121212 in words is "two trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twelve".