12212121220210 has 16 divisors (see below), whose sum is σ = 21983659588800. Its totient is φ = 4884439289776.

The previous prime is 12212121220183. The next prime is 12212121220213. The reversal of 12212121220210 is 1202212121221.

It is not an unprimeable number, because it can be changed into a prime (12212121220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51024430 + ... + 51263209.

It is an arithmetic number, because the mean of its divisors is an integer number (1373978724300).

Almost surely, 2^{12212121220210} is an apocalyptic number.

12212121220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212121220210 is a deficient number, since it is larger than the sum of its proper divisors (9771538368590).

12212121220210 is a wasteful number, since it uses less digits than its factorization.

12212121220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102299585.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12212121220210 its reverse (1202212121221), we get a palindrome (13414333341431).

The spelling of 12212121220210 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, two hundred ten".