212221102111120 has 20 divisors (see below), whose sum is σ = 493414062408540. Its totient is φ = 84888440844416.

The previous prime is 212221102111097. The next prime is 212221102111177. The reversal of 212221102111120 is 21111201122212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67531382191504 + 144689719919616 = 8217748^2 + 12028704^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 1326381888115 + ... + 1326381888274.

It is an arithmetic number, because the mean of its divisors is an integer number (24670703120427).

Almost surely, 2^{212221102111120} is an apocalyptic number.

212221102111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221102111120 is an abundant number, since it is smaller than the sum of its proper divisors (281192960297420).

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

212221102111120 is a wasteful number, since it uses less digits than its factorization.

212221102111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652763776402 (or 2652763776396 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212221102111120 its reverse (21111201122212), we get a palindrome (233332303233332).

The spelling of 212221102111120 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred twenty".