2211406560 has 144 divisors (see below), whose sum is σ = 8232522480. Its totient is φ = 536094720.

The previous prime is 2211406543. The next prime is 2211406573. The reversal of 2211406560 is 656041122.

2211406560 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 4 + 0 + 656 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×2211406560² = 9780637947222067200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53965 + ... + 85644.

It is an arithmetic number, because the mean of its divisors is an integer number (57170295).

Almost surely, 2^2211406560 is an apocalyptic number.

2211406560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211406560 is an abundant number, since it is smaller than the sum of its proper divisors (6021115920).

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

2211406560 is a wasteful number, since it uses less digits than its factorization.

2211406560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139641 (or 139630 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2211406560 is about 47025.5947330813. The cubic root of 2211406560 is about 1302.8353421032.

Adding to 2211406560 its reverse (656041122), we get a palindrome (2867447682).

The spelling of 2211406560 in words is "two billion, two hundred eleven million, four hundred six thousand, five hundred sixty".