210222102020020 has 24 divisors (see below), whose sum is σ = 442649970328104. Its totient is φ = 83863401553536.

The previous prime is 210222102020011. The next prime is 210222102020041. The reversal of 210222102020020 is 20020201222012.

It can be written as a sum of positive squares in 4 ways, for example, as 80804494113424 + 129417607906596 = 8989132^2 + 11376186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210222102019976 and 210222102020003.

It is a congruent number.

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, 14089945759 + ... + 14089960678.

It is an arithmetic number, because the mean of its divisors is an integer number (18443748763671).

Almost surely, 2^{210222102020020} is an apocalyptic number.

210222102020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210222102020020 is an abundant number, since it is smaller than the sum of its proper divisors (232427868308084).

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

210222102020020 is a wasteful number, since it uses less digits than its factorization.

210222102020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28179906819 (or 28179906817 counting only the distinct ones).

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

Adding to 210222102020020 its reverse (20020201222012), we get a palindrome (230242303242032).

The spelling of 210222102020020 in words is "two hundred ten trillion, two hundred twenty-two billion, one hundred two million, twenty thousand, twenty".