212112121210 has 64 divisors (see below), whose sum is σ = 418352014080. Its totient is φ = 76791237120.

The previous prime is 212112121187. The next prime is 212112121219. The reversal of 212112121210 is 12121211212.

It is not an unprimeable number, because it can be changed into a prime (212112121219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56276206 + ... + 56279974.

It is an arithmetic number, because the mean of its divisors is an integer number (6536750220).

Almost surely, 2^212112121210 is an apocalyptic number.

212112121210 is a deficient number, since it is larger than the sum of its proper divisors (206239892870).

212112121210 is a wasteful number, since it uses less digits than its factorization.

212112121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911.

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

Adding to 212112121210 its reverse (12121211212), we get a palindrome (224233332422).

The spelling of 212112121210 in words is "two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, two hundred ten".