212201121201220 has 12 divisors (see below), whose sum is σ = 445622354522604. Its totient is φ = 84880448480480.

The previous prime is 212201121201149. The next prime is 212201121201239. The reversal of 212201121201220 is 22102121102212.

It can be written as a sum of positive squares in 2 ways, for example, as 68190369000516 + 144010752200704 = 8257746^2 + 12000448^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305028030011 + ... + 5305028030050.

It is an arithmetic number, because the mean of its divisors is an integer number (37135196210217).

Almost surely, 2^{212201121201220} is an apocalyptic number.

212201121201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201121201220 is an abundant number, since it is smaller than the sum of its proper divisors (233421233321384).

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

212201121201220 is a wasteful number, since it uses less digits than its factorization.

212201121201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610056060070 (or 10610056060068 counting only the distinct ones).

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

Adding to 212201121201220 its reverse (22102121102212), we get a palindrome (234303242303432).

The spelling of 212201121201220 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty-one million, two hundred one thousand, two hundred twenty".