2100444321 has 4 divisors (see below), whose sum is σ = 2800592432. Its totient is φ = 1400296212.

The previous prime is 2100444287. The next prime is 2100444343. The reversal of 2100444321 is 1234440012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2100444321 - 2¹⁷ = 2100313249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100444361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350074051 + ... + 350074056.

It is an arithmetic number, because the mean of its divisors is an integer number (700148108).

Almost surely, 2^2100444321 is an apocalyptic number.

It is an amenable number.

2100444321 is a deficient number, since it is larger than the sum of its proper divisors (700148111).

2100444321 is an equidigital number, since it uses as much as digits as its factorization.

2100444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700148110.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2100444321 is about 45830.6046327124. The cubic root of 2100444321 is about 1280.6694742083.

Adding to 2100444321 its reverse (1234440012), we get a palindrome (3334884333).

The spelling of 2100444321 in words is "two billion, one hundred million, four hundred forty-four thousand, three hundred twenty-one".