2100212321 has 8 divisors (see below), whose sum is σ = 2185481760. Its totient is φ = 2016598752.

The previous prime is 2100212293. The next prime is 2100212417. The reversal of 2100212321 is 1232120012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100212321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100212296 and 2100212305.

It is not an unprimeable number, because it can be changed into a prime (2100218321) 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 7 ways as a sum of consecutive naturals, for example, 411380 + ... + 416453.

It is an arithmetic number, because the mean of its divisors is an integer number (273185220).

Almost surely, 2^2100212321 is an apocalyptic number.

It is an amenable number.

2100212321 is a deficient number, since it is larger than the sum of its proper divisors (85269439).

2100212321 is an equidigital number, since it uses as much as digits as its factorization.

2100212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827935.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2100212321 is about 45828.0735030396. The cubic root of 2100212321 is about 1280.6223212869.

Adding to 2100212321 its reverse (1232120012), we get a palindrome (3332332333).

The spelling of 2100212321 in words is "two billion, one hundred million, two hundred twelve thousand, three hundred twenty-one".