212100112012 has 6 divisors (see below), whose sum is σ = 371175196028. Its totient is φ = 106050056004.

The previous prime is 212100111947. The next prime is 212100112013. The reversal of 212100112012 is 210211001212.

It is a junction number, because it is equal to n+sod(n) for n = 212100111983 and 212100112001.

It is not an unprimeable number, because it can be changed into a prime (212100112013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26512513998 + ... + 26512514005.

Almost surely, 2^212100112012 is an apocalyptic number.

It is an amenable number.

212100112012 is a deficient number, since it is larger than the sum of its proper divisors (159075084016).

212100112012 is a wasteful number, since it uses less digits than its factorization.

212100112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53025028007 (or 53025028005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212100112012 its reverse (210211001212), we get a palindrome (422311113224).

The spelling of 212100112012 in words is "two hundred twelve billion, one hundred million, one hundred twelve thousand, twelve".