20202211100020 has 24 divisors (see below), whose sum is σ = 43225108280424. Its totient is φ = 7928414921856.

The previous prime is 20202211100017. The next prime is 20202211100021. The reversal of 20202211100020 is 2000111220202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 186447785616 + 20015763314404 = 431796^2 + 4473898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202211100021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9529343799 + ... + 9529345918.

It is an arithmetic number, because the mean of its divisors is an integer number (1801046178351).

Almost surely, 2^{20202211100020} is an apocalyptic number.

20202211100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202211100020 is an abundant number, since it is smaller than the sum of its proper divisors (23022897180404).

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

20202211100020 is a wasteful number, since it uses less digits than its factorization.

20202211100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058689779 (or 19058689777 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20202211100020 its reverse (2000111220202), we get a palindrome (22202322320222).

The spelling of 20202211100020 in words is "twenty trillion, two hundred two billion, two hundred eleven million, one hundred thousand, twenty".