20101222202020 has 48 divisors (see below), whose sum is σ = 42908249665008. Its totient is φ = 7908000399360.

The previous prime is 20101222201961. The next prime is 20101222202023. The reversal of 20101222202020 is 2020222210102.

It can be written as a sum of positive squares in 8 ways, for example, as 759112704 + 20100463089316 = 27552^2 + 4483354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20101222201985 and 20101222202003.

It is not an unprimeable number, because it can be changed into a prime (20101222202023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13668424 + ... + 15067456.

It is an arithmetic number, because the mean of its divisors is an integer number (893921868021).

Almost surely, 2^{20101222202020} is an apocalyptic number.

20101222202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101222202020 is an abundant number, since it is smaller than the sum of its proper divisors (22807027462988).

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

20101222202020 is a wasteful number, since it uses less digits than its factorization.

20101222202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410880 (or 1410878 counting only the distinct ones).

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

Adding to 20101222202020 its reverse (2020222210102), we get a palindrome (22121444412122).

The spelling of 20101222202020 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, two hundred two thousand, twenty".