12201121220210 has 64 divisors (see below), whose sum is σ = 23714394780384. Its totient is φ = 4493035008000.

The previous prime is 12201121220209. The next prime is 12201121220243. The reversal of 12201121220210 is 1202212110221.

It can be written as a sum of positive squares in 16 ways, for example, as 1211014412521 + 10990106807689 = 1100461^2 + 3315133^2 .

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 31 ways as a sum of consecutive naturals, for example, 377248640 + ... + 377280980.

Almost surely, 2^{12201121220210} is an apocalyptic number.

12201121220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201121220210 is a deficient number, since it is larger than the sum of its proper divisors (11513273560174).

12201121220210 is a wasteful number, since it uses less digits than its factorization.

12201121220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39999.

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

Adding to 12201121220210 its reverse (1202212110221), we get a palindrome (13403333330431).

The spelling of 12201121220210 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred ten".