2124100321 has 4 divisors (see below), whose sum is σ = 2427543232. Its totient is φ = 1820657412.

The previous prime is 2124100313. The next prime is 2124100327. The reversal of 2124100321 is 1230014212.

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 2124100321 - 2³ = 2124100313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124100295 and 2124100304.

It is not an unprimeable number, because it can be changed into a prime (2124100327) 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, 151721445 + ... + 151721458.

It is an arithmetic number, because the mean of its divisors is an integer number (606885808).

Almost surely, 2^2124100321 is an apocalyptic number.

It is an amenable number.

2124100321 is a deficient number, since it is larger than the sum of its proper divisors (303442911).

2124100321 is an equidigital number, since it uses as much as digits as its factorization.

2124100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303442910.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2124100321 is about 46087.9628645051. The cubic root of 2124100321 is about 1285.4593322234.

Adding to 2124100321 its reverse (1230014212), we get a palindrome (3354114533).

The spelling of 2124100321 in words is "two billion, one hundred twenty-four million, one hundred thousand, three hundred twenty-one".