211202202200020 has 12 divisors (see below), whose sum is σ = 443524624620084. Its totient is φ = 84480880880000.

The previous prime is 211202202199991. The next prime is 211202202200029. The reversal of 211202202200020 is 20002202202112.

It can be written as a sum of positive squares in 2 ways, for example, as 124269030350404 + 86933171849616 = 11147602^2 + 9323796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211202202199967 and 211202202200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202202200029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280055054981 + ... + 5280055055020.

It is an arithmetic number, because the mean of its divisors is an integer number (36960385385007).

Almost surely, 2^{211202202200020} is an apocalyptic number.

211202202200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211202202200020 is an abundant number, since it is smaller than the sum of its proper divisors (232322422420064).

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

211202202200020 is a wasteful number, since it uses less digits than its factorization.

211202202200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560110110010 (or 10560110110008 counting only the distinct ones).

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

Adding to 211202202200020 its reverse (20002202202112), we get a palindrome (231204404402132).

The spelling of 211202202200020 in words is "two hundred eleven trillion, two hundred two billion, two hundred two million, two hundred thousand, twenty".