2102202020101 has 4 divisors (see below), whose sum is σ = 2103280627500. Its totient is φ = 2101123412704.

The previous prime is 2102202020071. The next prime is 2102202020129. The reversal of 2102202020101 is 1010202022012.

It is a happy number.

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 720378260001 + 1381823760100 = 848751^2 + 1175510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102202020101 - 2¹¹ = 2102202018053 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 (2102202020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539300776 + ... + 539304673.

It is an arithmetic number, because the mean of its divisors is an integer number (525820156875).

Almost surely, 2^{2102202020101} is an apocalyptic number.

It is an amenable number.

2102202020101 is a deficient number, since it is larger than the sum of its proper divisors (1078607399).

2102202020101 is a wasteful number, since it uses less digits than its factorization.

2102202020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078607398.

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

Adding to 2102202020101 its reverse (1010202022012), we get a palindrome (3112404042113).

The spelling of 2102202020101 in words is "two trillion, one hundred two billion, two hundred two million, twenty thousand, one hundred one".