2021122223220 has 24 divisors (see below), whose sum is σ = 5659142225184. Its totient is φ = 538965926176.

The previous prime is 2021122223209. The next prime is 2021122223413. The reversal of 2021122223220 is 223222211202.

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, 16842685134 + ... + 16842685253.

It is an arithmetic number, because the mean of its divisors is an integer number (235797592716).

Almost surely, 2^{2021122223220} is an apocalyptic number.

2021122223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021122223220 is an abundant number, since it is smaller than the sum of its proper divisors (3638020001964).

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

2021122223220 is a wasteful number, since it uses less digits than its factorization.

2021122223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33685370399 (or 33685370397 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 2021122223220 its reverse (223222211202), we get a palindrome (2244344434422).

The spelling of 2021122223220 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty".