211210211212 has 48 divisors (see below), whose sum is σ = 496270156032. Its totient is φ = 75959714880.

The previous prime is 211210211209. The next prime is 211210211231. The reversal of 211210211212 is 212112012112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26370898 + ... + 26378905.

It is an arithmetic number, because the mean of its divisors is an integer number (10338961584).

Almost surely, 2^211210211212 is an apocalyptic number.

211210211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211210211212 is an abundant number, since it is smaller than the sum of its proper divisors (285059944820).

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

211210211212 is a wasteful number, since it uses less digits than its factorization.

211210211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52749838 (or 52749836 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210211212 its reverse (212112012112), we get a palindrome (423322223324).

Subtracting 211210211212 from its reverse (212112012112), we obtain a square (901800900 = 30030²).

The spelling of 211210211212 in words is "two hundred eleven billion, two hundred ten million, two hundred eleven thousand, two hundred twelve".