220918221282 has 32 divisors (see below), whose sum is σ = 484526997504. Its totient is φ = 66594414800.

The previous prime is 220918221263. The next prime is 220918221283. The reversal of 220918221282 is 282122819022.

220918221282 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 220918221282.

It is not an unprimeable number, because it can be changed into a prime (220918221283) 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 15 ways as a sum of consecutive naturals, for example, 8749818 + ... + 8775029.

It is an arithmetic number, because the mean of its divisors is an integer number (15141468672).

Almost surely, 2^220918221282 is an apocalyptic number.

220918221282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220918221282 is an abundant number, since it is smaller than the sum of its proper divisors (263608776222).

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

220918221282 is a wasteful number, since it uses less digits than its factorization.

220918221282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17525054.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 220918221282 in words is "two hundred twenty billion, nine hundred eighteen million, two hundred twenty-one thousand, two hundred eighty-two".