2212121112 has 32 divisors (see below), whose sum is σ = 5584001280. Its totient is φ = 730213920.

The previous prime is 2212121099. The next prime is 2212121137. The reversal of 2212121112 is 2111212122.

It is a super-2 number, since 2×2212121112² = 9786959628312233088, which contains 22 as substring.

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 = 2212121091 and 2212121100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444964 + ... + 449907.

It is an arithmetic number, because the mean of its divisors is an integer number (174500040).

Almost surely, 2^2212121112 is an apocalyptic number.

It is an amenable number.

2212121112 is an abundant number, since it is smaller than the sum of its proper divisors (3371880168).

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

2212121112 is a wasteful number, since it uses less digits than its factorization.

2212121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894983 (or 894979 counting only the distinct ones).

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

The square root of 2212121112 is about 47033.1915991250. The cubic root of 2212121112 is about 1302.9756514980.

Adding to 2212121112 its reverse (2111212122), we get a palindrome (4323333234).

The spelling of 2212121112 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".