20221211120020 has 96 divisors (see below), whose sum is σ = 47303944803360. Its totient is φ = 7226285506560.

The previous prime is 20221211119937. The next prime is 20221211120021. The reversal of 20221211120020 is 2002111212202.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 4410949251076 + 15810261868944 = 2100226^2 + 3976212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20221211119976 and 20221211120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221211120021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19086775 + ... + 20118334.

It is an arithmetic number, because the mean of its divisors is an integer number (492749425035).

Almost surely, 2^{20221211120020} is an apocalyptic number.

20221211120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221211120020 is an abundant number, since it is smaller than the sum of its proper divisors (27082733683340).

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

20221211120020 is a wasteful number, since it uses less digits than its factorization.

20221211120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39205213 (or 39205211 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20221211120020 its reverse (2002111212202), we get a palindrome (22223322332222).

The spelling of 20221211120020 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, twenty".