200210110021021 has 4 divisors (see below), whose sum is σ = 202459661819100. Its totient is φ = 197960558222944.

The previous prime is 200210110021013. The next prime is 200210110021057. The reversal of 200210110021021 is 120120011012002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31195419701796 + 169014690319225 = 5585286^2 + 13000565^2 .

It is a cyclic number.

It is not a de Polignac number, because 200210110021021 - 2³ = 200210110021013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200210110020992 and 200210110021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200210110021721) 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, 1124775898906 + ... + 1124775899083.

It is an arithmetic number, because the mean of its divisors is an integer number (50614915454775).

Almost surely, 2^{200210110021021} is an apocalyptic number.

It is an amenable number.

200210110021021 is a deficient number, since it is larger than the sum of its proper divisors (2249551798079).

200210110021021 is an equidigital number, since it uses as much as digits as its factorization.

200210110021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249551798078.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200210110021021 its reverse (120120011012002), we get a palindrome (320330121033023).

The spelling of 200210110021021 in words is "two hundred trillion, two hundred ten billion, one hundred ten million, twenty-one thousand, twenty-one".