202020202100101 has 24 divisors (see below), whose sum is σ = 261204123142944. Its totient is φ = 154448181931680.

The previous prime is 202020202100089. The next prime is 202020202100209. The reversal of 202020202100101 is 101001202020202.

It is a happy number.

It is not a de Polignac number, because 202020202100101 - 2⁷ = 202020202099973 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 (202020202100501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3535873035 + ... + 3535930168.

It is an arithmetic number, because the mean of its divisors is an integer number (10883505130956).

Almost surely, 2^{202020202100101} is an apocalyptic number.

It is an amenable number.

202020202100101 is a deficient number, since it is larger than the sum of its proper divisors (59183921042843).

202020202100101 is a wasteful number, since it uses less digits than its factorization.

202020202100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071803281 (or 7071803274 counting only the distinct ones).

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

Adding to 202020202100101 its reverse (101001202020202), we get a palindrome (303021404120303).

The spelling of 202020202100101 in words is "two hundred two trillion, twenty billion, two hundred two million, one hundred thousand, one hundred one".