20021012222020 has 24 divisors (see below), whose sum is σ = 42049343044800. Its totient is φ = 8007411102432.

The previous prime is 20021012221963. The next prime is 20021012222041. The reversal of 20021012222020 is 2022221012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021012221985 and 20021012222003.

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, 61946440 + ... + 62268799.

It is an arithmetic number, because the mean of its divisors is an integer number (1752055960200).

Almost surely, 2^{20021012222020} is an apocalyptic number.

20021012222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021012222020 is an abundant number, since it is smaller than the sum of its proper divisors (22028330822780).

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

20021012222020 is a wasteful number, since it uses less digits than its factorization.

20021012222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124223307 (or 124223305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20021012222020 its reverse (2022221012002), we get a palindrome (22043233234022).

The spelling of 20021012222020 in words is "twenty trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, twenty".