20212122222020 has 192 divisors, whose sum is σ = 44156666695680. Its totient is φ = 7766646571008.

The previous prime is 20212122222001. The next prime is 20212122222091. The reversal of 20212122222020 is 2022222121202.

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 = 20212122221983 and 20212122222001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12198021032 + ... + 12198022688.

It is an arithmetic number, because the mean of its divisors is an integer number (229982639040).

Almost surely, 2^{20212122222020} is an apocalyptic number.

20212122222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212122222020 is an abundant number, since it is smaller than the sum of its proper divisors (23944544473660).

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

20212122222020 is a wasteful number, since it uses less digits than its factorization.

20212122222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2660 counting only the distinct ones).

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

Adding to 20212122222020 its reverse (2022222121202), we get a palindrome (22234344343222).

The spelling of 20212122222020 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty".