212101002100220 has 48 divisors (see below), whose sum is σ = 446460654826368. Its totient is φ = 84640820109120.

The previous prime is 212101002100199. The next prime is 212101002100223. The reversal of 212101002100220 is 22001200101212.

It is a junction number, because it is equal to n+sod(n) for n = 212101002100195 and 212101002100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101002100223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19240535 + ... + 28185105.

It is an arithmetic number, because the mean of its divisors is an integer number (9301263642216).

Almost surely, 2^{212101002100220} is an apocalyptic number.

212101002100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101002100220 is an abundant number, since it is smaller than the sum of its proper divisors (234359652726148).

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

212101002100220 is a wasteful number, since it uses less digits than its factorization.

212101002100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8947370 (or 8947368 counting only the distinct ones).

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

Adding to 212101002100220 its reverse (22001200101212), we get a palindrome (234102202201432).

The spelling of 212101002100220 in words is "two hundred twelve trillion, one hundred one billion, two million, one hundred thousand, two hundred twenty".