4320011203421 has 4 divisors (see below), whose sum is σ = 4320094567932. Its totient is φ = 4319927838912.

The previous prime is 4320011203393. The next prime is 4320011203423. The reversal of 4320011203421 is 1243021100234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2457100140196 + 1862911063225 = 1567514^2 + 1364885^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320011203421 - 2²² = 4320007009117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320011203423) 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, 41604476 + ... + 41708181.

It is an arithmetic number, because the mean of its divisors is an integer number (1080023641983).

Almost surely, 2^{4320011203421} is an apocalyptic number.

It is an amenable number.

4320011203421 is a deficient number, since it is larger than the sum of its proper divisors (83364511).

4320011203421 is an equidigital number, since it uses as much as digits as its factorization.

4320011203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83364510.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 4320011203421 its reverse (1243021100234), we get a palindrome (5563032303655).

The spelling of 4320011203421 in words is "four trillion, three hundred twenty billion, eleven million, two hundred three thousand, four hundred twenty-one".