220720606205 has 16 divisors (see below), whose sum is σ = 298264094208. Its totient is φ = 155345880000.

The previous prime is 220720606181. The next prime is 220720606229. The reversal of 220720606205 is 502606027022.

It is an interprime number because it is at equal distance from previous prime (220720606181) and next prime (220720606229).

It is not a de Polignac number, because 220720606205 - 2¹⁰ = 220720605181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64725746 + ... + 64729155.

It is an arithmetic number, because the mean of its divisors is an integer number (18641505888).

Almost surely, 2^220720606205 is an apocalyptic number.

It is an amenable number.

220720606205 is a deficient number, since it is larger than the sum of its proper divisors (77543488003).

220720606205 is a wasteful number, since it uses less digits than its factorization.

220720606205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129454948.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 220720606205 in words is "two hundred twenty billion, seven hundred twenty million, six hundred six thousand, two hundred five".