212221200222220 has 24 divisors (see below), whose sum is σ = 509330880533664. Its totient is φ = 72761554361856.

The previous prime is 212221200222217. The next prime is 212221200222223. The reversal of 212221200222220 is 22222002122212.

It is an interprime number because it is at equal distance from previous prime (212221200222217) and next prime (212221200222223).

It is a junction number, because it is equal to n+sod(n) for n = 212221200222191 and 212221200222200.

It is not an unprimeable number, because it can be changed into a prime (212221200222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757932857797 + ... + 757932858076.

It is an arithmetic number, because the mean of its divisors is an integer number (21222120022236).

Almost surely, 2^{212221200222220} is an apocalyptic number.

212221200222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221200222220 is an abundant number, since it is smaller than the sum of its proper divisors (297109680311444).

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

212221200222220 is a wasteful number, since it uses less digits than its factorization.

212221200222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515865715889 (or 1515865715887 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212221200222220 its reverse (22222002122212), we get a palindrome (234443202344432).

The spelling of 212221200222220 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, two hundred twenty".