212220100112220 has 48 divisors (see below), whose sum is σ = 660240311461920. Its totient is φ = 56592026696448.

The previous prime is 212220100112219. The next prime is 212220100112311. The reversal of 212220100112220 is 22211001022212.

It is a happy number.

212220100112220 is a `hidden beast` number, since 2 + 12 + 220 + 100 + 112 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212220100112193 and 212220100112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196500092157 + ... + 196500093236.

It is an arithmetic number, because the mean of its divisors is an integer number (13755006488790).

Almost surely, 2^{212220100112220} is an apocalyptic number.

212220100112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220100112220 is an abundant number, since it is smaller than the sum of its proper divisors (448020211349700).

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

212220100112220 is a wasteful number, since it uses less digits than its factorization.

212220100112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393000185411 (or 393000185403 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212220100112220 its reverse (22211001022212), we get a palindrome (234431101134432).

The spelling of 212220100112220 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred million, one hundred twelve thousand, two hundred twenty".