2661530222 has 16 divisors (see below), whose sum is σ = 4525679760. Its totient is φ = 1163745792.

The previous prime is 2661530191. The next prime is 2661530227. The reversal of 2661530222 is 2220351662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661530227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693363 + ... + 2694350.

It is an arithmetic number, because the mean of its divisors is an integer number (282854985).

Almost surely, 2^2661530222 is an apocalyptic number.

2661530222 is a deficient number, since it is larger than the sum of its proper divisors (1864149538).

2661530222 is a wasteful number, since it uses less digits than its factorization.

2661530222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387747.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2661530222 is about 51590.0205659971. The cubic root of 2661530222 is about 1385.8316234777.

Adding to 2661530222 its reverse (2220351662), we get a palindrome (4881881884).

The spelling of 2661530222 in words is "two billion, six hundred sixty-one million, five hundred thirty thousand, two hundred twenty-two".