10020201021 has 24 divisors (see below), whose sum is σ = 14977214720. Its totient is φ = 6448766400.

The previous prime is 10020200989. The next prime is 10020201043. The reversal of 10020201021 is 12010202001.

It is not a de Polignac number, because 10020201021 - 2⁵ = 10020200989 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020200994 and 10020201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020211021) 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 23 ways as a sum of consecutive naturals, for example, 70206 + ... + 158016.

Almost surely, 2^10020201021 is an apocalyptic number.

It is an amenable number.

10020201021 is a deficient number, since it is larger than the sum of its proper divisors (4957013699).

10020201021 is a wasteful number, since it uses less digits than its factorization.

10020201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88257 (or 88254 counting only the distinct ones).

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

Adding to 10020201021 its reverse (12010202001), we get a palindrome (22030403022).

The spelling of 10020201021 in words is "ten billion, twenty million, two hundred one thousand, twenty-one".