20221220330220 has 192 divisors, whose sum is σ = 70725518631936. Its totient is φ = 4202776765440.

The previous prime is 20221220330203. The next prime is 20221220330221. The reversal of 20221220330220 is 2203302212202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20221220330221) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 27272391 + ... + 28004030.

It is an arithmetic number, because the mean of its divisors is an integer number (368362076208).

Almost surely, 2^{20221220330220} is an apocalyptic number.

20221220330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221220330220 is an abundant number, since it is smaller than the sum of its proper divisors (50504298301716).

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

20221220330220 is a wasteful number, since it uses less digits than its factorization.

20221220330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55276520 (or 55276518 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20221220330220 its reverse (2203302212202), we get a palindrome (22424522542422).

The spelling of 20221220330220 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty million, three hundred thirty thousand, two hundred twenty".