202103210101 has 32 divisors (see below), whose sum is σ = 221300424800. Its totient is φ = 183462589440.

The previous prime is 202103210087. The next prime is 202103210161. The reversal of 202103210101 is 101012301202.

It can be written as a sum of positive squares in 16 ways, for example, as 127699737201 + 74403472900 = 357351^2 + 272770^2 .

It is not a de Polignac number, because 202103210101 - 2¹¹ = 202103208053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202103210161) 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 31 ways as a sum of consecutive naturals, for example, 84596215 + ... + 84598603.

It is an arithmetic number, because the mean of its divisors is an integer number (6915638275).

Almost surely, 2^202103210101 is an apocalyptic number.

It is an amenable number.

202103210101 is a deficient number, since it is larger than the sum of its proper divisors (19197214699).

202103210101 is a wasteful number, since it uses less digits than its factorization.

202103210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 202103210101 its reverse (101012301202), we get a palindrome (303115511303).

The spelling of 202103210101 in words is "two hundred two billion, one hundred three million, two hundred ten thousand, one hundred one".