220821128022 has 16 divisors (see below), whose sum is σ = 481791552192. Its totient is φ = 66915493320.

The previous prime is 220821128009. The next prime is 220821128071.

220821128022 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672887268 + ... + 1672887399.

It is an arithmetic number, because the mean of its divisors is an integer number (30111972012).

Almost surely, 2^220821128022 is an apocalyptic number.

220821128022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220821128022 is an abundant number, since it is smaller than the sum of its proper divisors (260970424170).

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

220821128022 is a wasteful number, since it uses less digits than its factorization.

220821128022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345774683.

The product of its (nonzero) digits is 4096, while the sum is 30.

It can be divided in two parts, 220821 and 128022, that added together give a palindrome (348843).

The spelling of 220821128022 in words is "two hundred twenty billion, eight hundred twenty-one million, one hundred twenty-eight thousand, twenty-two".