220021102000020 has 48 divisors (see below), whose sum is σ = 616860202875840. Its totient is φ = 58595996983296.

The previous prime is 220021102000009. The next prime is 220021102000111. The reversal of 220021102000020 is 20000201120022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2384231082 + ... + 2384323361.

It is an arithmetic number, because the mean of its divisors is an integer number (12851254226580).

Almost surely, 2^{220021102000020} is an apocalyptic number.

220021102000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021102000020 is an abundant number, since it is smaller than the sum of its proper divisors (396839100875820).

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

220021102000020 is a wasteful number, since it uses less digits than its factorization.

220021102000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768555224 (or 4768555222 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 220021102000020 its reverse (20000201120022), we get a palindrome (240021303120042).

The spelling of 220021102000020 in words is "two hundred twenty trillion, twenty-one billion, one hundred two million, twenty", and thus it is an aban number.