2111212212 has 12 divisors (see below), whose sum is σ = 4926161856. Its totient is φ = 703737400.

The previous prime is 2111212211. The next prime is 2111212217. The reversal of 2111212212 is 2122121112.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a junction number, because it is equal to n+sod(n) for n = 2111212191 and 2111212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111212211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87967164 + ... + 87967187.

It is an arithmetic number, because the mean of its divisors is an integer number (410513488).

Almost surely, 2^2111212212 is an apocalyptic number.

It is an amenable number.

2111212212 is an abundant number, since it is smaller than the sum of its proper divisors (2814949644).

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

2111212212 is a wasteful number, since it uses less digits than its factorization.

2111212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175934358 (or 175934356 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 2111212212 is about 45947.9293548686. The cubic root of 2111212212 is about 1282.8541883558.

Adding to 2111212212 its reverse (2122121112), we get a palindrome (4233333324).

The spelling of 2111212212 in words is "two billion, one hundred eleven million, two hundred twelve thousand, two hundred twelve".