220021122220220 has 24 divisors (see below), whose sum is σ = 462143956848000. Its totient is φ = 87989477424192.

The previous prime is 220021122220201. The next prime is 220021122220297. The reversal of 220021122220220 is 22022221120022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220021122220192 and 220021122220201.

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, 1185621395 + ... + 1185806954.

It is an arithmetic number, because the mean of its divisors is an integer number (19255998202000).

Almost surely, 2^{220021122220220} is an apocalyptic number.

220021122220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021122220220 is an abundant number, since it is smaller than the sum of its proper divisors (242122834627780).

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

220021122220220 is a wasteful number, since it uses less digits than its factorization.

220021122220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371432997 (or 2371432995 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 220021122220220 its reverse (22022221120022), we get a palindrome (242043343340242).

The spelling of 220021122220220 in words is "two hundred twenty trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty".