20112212112 has 40 divisors (see below), whose sum is σ = 52021837056. Its totient is φ = 6695646336.

The previous prime is 20112212111. The next prime is 20112212123. The reversal of 20112212112 is 21121221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112212091 and 20112212100.

It is not an unprimeable number, because it can be changed into a prime (20112212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224608 + ... + 301119.

Almost surely, 2^20112212112 is an apocalyptic number.

It is an amenable number.

20112212112 is an abundant number, since it is smaller than the sum of its proper divisors (31909624944).

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

20112212112 is a wasteful number, since it uses less digits than its factorization.

20112212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526535 (or 526529 counting only the distinct ones).

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

Adding to 20112212112 its reverse (21121221102), we get a palindrome (41233433214).

The spelling of 20112212112 in words is "twenty billion, one hundred twelve million, two hundred twelve thousand, one hundred twelve".