210020210101 has 4 divisors (see below), whose sum is σ = 226175610892. Its totient is φ = 193864809312.

The previous prime is 210020210083. The next prime is 210020210107. The reversal of 210020210101 is 101012020012.

210020210101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 27307562500 + 182712647601 = 165250^2 + 427449^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020210101 - 2²¹ = 210018112949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020210107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8077700376 + ... + 8077700401.

It is an arithmetic number, because the mean of its divisors is an integer number (56543902723).

Almost surely, 2^210020210101 is an apocalyptic number.

It is an amenable number.

210020210101 is a deficient number, since it is larger than the sum of its proper divisors (16155400791).

210020210101 is a wasteful number, since it uses less digits than its factorization.

210020210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16155400790.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210020210101 its reverse (101012020012), we get a palindrome (311032230113).

The spelling of 210020210101 in words is "two hundred ten billion, twenty million, two hundred ten thousand, one hundred one".