212101111212 has 48 divisors (see below), whose sum is σ = 520362323712. Its totient is φ = 67110197440.

The previous prime is 212101111181. The next prime is 212101111219. The reversal of 212101111212 is 212111101212.

It is a happy number.

212101111212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212101111191 and 212101111200.

It is not an unprimeable number, because it can be changed into a prime (212101111219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2896983 + ... + 2969294.

It is an arithmetic number, because the mean of its divisors is an integer number (10840881744).

Almost surely, 2^212101111212 is an apocalyptic number.

It is an amenable number.

212101111212 is an abundant number, since it is smaller than the sum of its proper divisors (308261212500).

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

212101111212 is a wasteful number, since it uses less digits than its factorization.

212101111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866438 (or 5866436 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212101111212 its reverse (212111101212), we get a palindrome (424212212424).

The spelling of 212101111212 in words is "two hundred twelve billion, one hundred one million, one hundred eleven thousand, two hundred twelve".