220215405220 has 12 divisors (see below), whose sum is σ = 462452351004. Its totient is φ = 88086162080.

The previous prime is 220215405187. The next prime is 220215405269. The reversal of 220215405220 is 22504512022.

220215405220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 153605989476 + 66609415744 = 391926^2 + 258088^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505385111 + ... + 5505385150.

It is an arithmetic number, because the mean of its divisors is an integer number (38537695917).

Almost surely, 2^220215405220 is an apocalyptic number.

220215405220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220215405220 is an abundant number, since it is smaller than the sum of its proper divisors (242236945784).

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

220215405220 is a wasteful number, since it uses less digits than its factorization.

220215405220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010770270 (or 11010770268 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 220215405220 its reverse (22504512022), we get a palindrome (242719917242).

The spelling of 220215405220 in words is "two hundred twenty billion, two hundred fifteen million, four hundred five thousand, two hundred twenty".