12212120021210 has 32 divisors (see below), whose sum is σ = 22079868544512. Its totient is φ = 4863086242560.

The previous prime is 12212120021201. The next prime is 12212120021237. The reversal of 12212120021210 is 1212002121221.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1801922 + ... + 5260338.

It is an arithmetic number, because the mean of its divisors is an integer number (689995892016).

Almost surely, 2^{12212120021210} is an apocalyptic number.

12212120021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212120021210 is a deficient number, since it is larger than the sum of its proper divisors (9867748523302).

12212120021210 is a wasteful number, since it uses less digits than its factorization.

12212120021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459998.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12212120021210 its reverse (1212002121221), we get a palindrome (13424122142431).

The spelling of 12212120021210 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, twenty-one thousand, two hundred ten".