220221101021020 has 24 divisors (see below), whose sum is σ = 504506522339568. Its totient is φ = 80080400371200.

The previous prime is 220221101020931. The next prime is 220221101021041. The reversal of 220221101021020 is 20120101122022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220221101020985 and 220221101021003.

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, 500502502101 + ... + 500502502540.

It is an arithmetic number, because the mean of its divisors is an integer number (21021105097482).

Almost surely, 2^{220221101021020} is an apocalyptic number.

220221101021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221101021020 is an abundant number, since it is smaller than the sum of its proper divisors (284285421318548).

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

220221101021020 is a wasteful number, since it uses less digits than its factorization.

220221101021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001005004661 (or 1001005004659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220221101021020 its reverse (20120101122022), we get a palindrome (240341202143042).

The spelling of 220221101021020 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred one million, twenty-one thousand, twenty".