220750721266 has 16 divisors (see below), whose sum is σ = 349029331200. Its totient is φ = 104423462928.

The previous prime is 220750721227. The next prime is 220750721309. The reversal of 220750721266 is 662127057022.

220750721266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 3934786 + ... + 3990493.

It is an arithmetic number, because the mean of its divisors is an integer number (21814333200).

Almost surely, 2^220750721266 is an apocalyptic number.

220750721266 is a deficient number, since it is larger than the sum of its proper divisors (128278609934).

220750721266 is a wasteful number, since it uses less digits than its factorization.

220750721266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926033.

The product of its (nonzero) digits is 141120, while the sum is 40.

Adding to 220750721266 its reverse (662127057022), we get a palindrome (882877778288).

The spelling of 220750721266 in words is "two hundred twenty billion, seven hundred fifty million, seven hundred twenty-one thousand, two hundred sixty-six".