4200021244321 has 4 divisors (see below), whose sum is σ = 4800024279232. Its totient is φ = 3600018209412.

The previous prime is 4200021244313. The next prime is 4200021244333. The reversal of 4200021244321 is 1234421200024.

4200021244321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 4200021244321 - 2³ = 4200021244313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4200021244351) 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, 300001517445 + ... + 300001517458.

It is an arithmetic number, because the mean of its divisors is an integer number (1200006069808).

Almost surely, 2^{4200021244321} is an apocalyptic number.

It is an amenable number.

4200021244321 is a deficient number, since it is larger than the sum of its proper divisors (600003034911).

4200021244321 is an equidigital number, since it uses as much as digits as its factorization.

4200021244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600003034910.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 4200021244321 its reverse (1234421200024), we get a palindrome (5434442444345).

The spelling of 4200021244321 in words is "four trillion, two hundred billion, twenty-one million, two hundred forty-four thousand, three hundred twenty-one".