212221100120 has 16 divisors (see below), whose sum is σ = 477497475360. Its totient is φ = 84888440032.

The previous prime is 212221100071. The next prime is 212221100173. The reversal of 212221100120 is 21001122212.

It is a super-2 number, since 2×212221100120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212221100095 and 212221100104.

It is a congruent number.

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, 2652763712 + ... + 2652763791.

It is an arithmetic number, because the mean of its divisors is an integer number (29843592210).

Almost surely, 2^212221100120 is an apocalyptic number.

212221100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221100120 is an abundant number, since it is smaller than the sum of its proper divisors (265276375240).

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

212221100120 is a wasteful number, since it uses less digits than its factorization.

212221100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305527514 (or 5305527510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212221100120 its reverse (21001122212), we get a palindrome (233222222332).

The spelling of 212221100120 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred thousand, one hundred twenty".