220220211100212 has 18 divisors (see below), whose sum is σ = 556667755836738. Its totient is φ = 73406737033392.

The previous prime is 220220211100199. The next prime is 220220211100217. The reversal of 220220211100212 is 212001112022022.

It is a happy number.

220220211100212 is a `hidden beast` number, since 2 + 20 + 220 + 211 + 1 + 0 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 219424554236196 + 795656864016 = 14812986^2 + 891996^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220211100217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3058614043023 + ... + 3058614043094.

Almost surely, 2^{220220211100212} is an apocalyptic number.

It is an amenable number.

220220211100212 is an abundant number, since it is smaller than the sum of its proper divisors (336447544736526).

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

220220211100212 is a wasteful number, since it uses less digits than its factorization.

220220211100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117228086127 (or 6117228086122 counting only the distinct ones).

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

Adding to 220220211100212 its reverse (212001112022022), we get a palindrome (432221323122234).

The spelling of 220220211100212 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred eleven million, one hundred thousand, two hundred twelve".