10202020101 has 48 divisors (see below), whose sum is σ = 18627167104. Its totient is φ = 5235829632.

The previous prime is 10202020099. The next prime is 10202020121. The reversal of 10202020101 is 10102020201.

It is not a de Polignac number, because 10202020101 - 2¹ = 10202020099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138031 + ... + 198636.

Almost surely, 2^10202020101 is an apocalyptic number.

It is an amenable number.

10202020101 is a deficient number, since it is larger than the sum of its proper divisors (8425147003).

10202020101 is a wasteful number, since it uses less digits than its factorization.

10202020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336730 (or 336727 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10202020101 its reverse (10102020201), we get a palindrome (20304040302).

The spelling of 10202020101 in words is "ten billion, two hundred two million, twenty thousand, one hundred one".