210002103021 has 16 divisors (see below), whose sum is σ = 280332892224. Its totient is φ = 139836430464.

The previous prime is 210002103013. The next prime is 210002103053. The reversal of 210002103021 is 120301200012.

It is not a de Polignac number, because 210002103021 - 2³ = 210002103013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210002102988 and 210002103006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002103821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18282346 + ... + 18293828.

It is an arithmetic number, because the mean of its divisors is an integer number (17520805764).

Almost surely, 2^210002103021 is an apocalyptic number.

It is an amenable number.

210002103021 is a deficient number, since it is larger than the sum of its proper divisors (70330789203).

210002103021 is a wasteful number, since it uses less digits than its factorization.

210002103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 210002103021 its reverse (120301200012), we get a palindrome (330303303033).

The spelling of 210002103021 in words is "two hundred ten billion, two million, one hundred three thousand, twenty-one".