4221201040321 has 4 divisors (see below), whose sum is σ = 4238862969600. Its totient is φ = 4203539111044.

The previous prime is 4221201040313. The next prime is 4221201040373. The reversal of 4221201040321 is 1230401021224.

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 4221201040321 - 2³ = 4221201040313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221201040292 and 4221201040301.

It is not an unprimeable number, because it can be changed into a prime (4221201040921) 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, 8830964281 + ... + 8830964758.

It is an arithmetic number, because the mean of its divisors is an integer number (1059715742400).

Almost surely, 2^{4221201040321} is an apocalyptic number.

It is an amenable number.

4221201040321 is a deficient number, since it is larger than the sum of its proper divisors (17661929279).

4221201040321 is a wasteful number, since it uses less digits than its factorization.

4221201040321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17661929278.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 4221201040321 its reverse (1230401021224), we get a palindrome (5451602061545).

The spelling of 4221201040321 in words is "four trillion, two hundred twenty-one billion, two hundred one million, forty thousand, three hundred twenty-one".