211120200001220 has 12 divisors (see below), whose sum is σ = 443352420002604. Its totient is φ = 84448080000480.

The previous prime is 211120200001187. The next prime is 211120200001259. The reversal of 211120200001220 is 22100002021112.

It can be written as a sum of positive squares in 2 ways, for example, as 91917126624964 + 119203073376256 = 9587342^2 + 10918016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211120200001195 and 211120200001204.

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, 5278005000011 + ... + 5278005000050.

It is an arithmetic number, because the mean of its divisors is an integer number (36946035000217).

Almost surely, 2^{211120200001220} is an apocalyptic number.

211120200001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211120200001220 is an abundant number, since it is smaller than the sum of its proper divisors (232232220001384).

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

211120200001220 is a wasteful number, since it uses less digits than its factorization.

211120200001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556010000070 (or 10556010000068 counting only the distinct ones).

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

Adding to 211120200001220 its reverse (22100002021112), we get a palindrome (233220202022332).

The spelling of 211120200001220 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred million, one thousand, two hundred twenty".