2220000161605 has 16 divisors (see below), whose sum is σ = 2792440373184. Its totient is φ = 1692388091520.

The previous prime is 2220000161563. The next prime is 2220000161629. The reversal of 2220000161605 is 5061610000222.

It is not a de Polignac number, because 2220000161605 - 2³⁵ = 2185640423237 is a prime.

It is a super-2 number, since 2×2220000161605² (a number of 25 digits) contains 22 as substring.

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 2220000161605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125912919 + ... + 125930548.

It is an arithmetic number, because the mean of its divisors is an integer number (174527523324).

Almost surely, 2^{2220000161605} is an apocalyptic number.

It is an amenable number.

2220000161605 is a deficient number, since it is larger than the sum of its proper divisors (572440211579).

2220000161605 is a wasteful number, since it uses less digits than its factorization.

2220000161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251843556.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 2220000161605 its reverse (5061610000222), we get a palindrome (7281610161827).

The spelling of 2220000161605 in words is "two trillion, two hundred twenty billion, one hundred sixty-one thousand, six hundred five".