2220860161 has 32 divisors (see below), whose sum is σ = 2615348736. Its totient is φ = 1867008000.

The previous prime is 2220860153. The next prime is 2220860171. The reversal of 2220860161 is 1610680222.

It is not a de Polignac number, because 2220860161 - 2³ = 2220860153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220860101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1186056 + ... + 1187926.

It is an arithmetic number, because the mean of its divisors is an integer number (81729648).

Almost surely, 2^2220860161 is an apocalyptic number.

It is an amenable number.

2220860161 is a deficient number, since it is larger than the sum of its proper divisors (394488575).

2220860161 is a wasteful number, since it uses less digits than its factorization.

2220860161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2220860161 is about 47126.0030238084. The cubic root of 2220860161 is about 1304.6892114291.

It can be divided in two parts, 22208 and 60161, that added together give a square (82369 = 287²).

The spelling of 2220860161 in words is "two billion, two hundred twenty million, eight hundred sixty thousand, one hundred sixty-one".