210002100321 has 64 divisors (see below), whose sum is σ = 307560314880. Its totient is φ = 126681891840.

The previous prime is 210002100313. The next prime is 210002100353. The reversal of 210002100321 is 123001200012.

It is not a de Polignac number, because 210002100321 - 2³ = 210002100313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210002100297 and 210002100306.

It is not an unprimeable number, because it can be changed into a prime (210002100421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 339259950 + ... + 339260568.

It is an arithmetic number, because the mean of its divisors is an integer number (4805629920).

Almost surely, 2^210002100321 is an apocalyptic number.

It is an amenable number.

210002100321 is a deficient number, since it is larger than the sum of its proper divisors (97558214559).

210002100321 is a wasteful number, since it uses less digits than its factorization.

210002100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

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

Adding to 210002100321 its reverse (123001200012), we get a palindrome (333003300333).

The spelling of 210002100321 in words is "two hundred ten billion, two million, one hundred thousand, three hundred twenty-one".