212122120210 has 128 divisors (see below), whose sum is σ = 514957492224. Its totient is φ = 60755823360.

The previous prime is 212122120181. The next prime is 212122120267. The reversal of 212122120210 is 12021221212.

It is a happy number.

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 63 ways as a sum of consecutive naturals, for example, 2184717 + ... + 2279743.

It is an arithmetic number, because the mean of its divisors is an integer number (4023105408).

Almost surely, 2^212122120210 is an apocalyptic number.

212122120210 is an abundant number, since it is smaller than the sum of its proper divisors (302835372014).

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

212122120210 is a wasteful number, since it uses less digits than its factorization.

212122120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95288.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212122120210 its reverse (12021221212), we get a palindrome (224143341422).

It can be divided in two parts, 2121221202 and 10, that added together give a palindrome (2121221212).

The spelling of 212122120210 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred ten".