220038555217 has 32 divisors (see below), whose sum is σ = 240668467200. Its totient is φ = 199969482240.

The previous prime is 220038555211. The next prime is 220038555323. The reversal of 220038555217 is 712555830022.

It is a cyclic number.

It is not a de Polignac number, because 220038555217 - 2¹¹ = 220038553169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220038555217.

It is not an unprimeable number, because it can be changed into a prime (220038555211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135741667 + ... + 135743287.

It is an arithmetic number, because the mean of its divisors is an integer number (7520889600).

Almost surely, 2^220038555217 is an apocalyptic number.

It is an amenable number.

220038555217 is a deficient number, since it is larger than the sum of its proper divisors (20629911983).

220038555217 is a wasteful number, since it uses less digits than its factorization.

220038555217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 220038555217 in words is "two hundred twenty billion, thirty-eight million, five hundred fifty-five thousand, two hundred seventeen".