4021221011331 has 16 divisors (see below), whose sum is σ = 5429591183360. Its totient is φ = 2646833604480.

The previous prime is 4021221011323. The next prime is 4021221011333. The reversal of 4021221011331 is 1331101221204.

4021221011331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4021221011331 - 2³ = 4021221011323 is a prime.

It is a super-3 number, since 3×4021221011331³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021221011298 and 4021221011307.

It is not an unprimeable number, because it can be changed into a prime (4021221011333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18423246 + ... + 18640236.

It is an arithmetic number, because the mean of its divisors is an integer number (339349448960).

Almost surely, 2^{4021221011331} is an apocalyptic number.

4021221011331 is a deficient number, since it is larger than the sum of its proper divisors (1408370172029).

4021221011331 is a wasteful number, since it uses less digits than its factorization.

4021221011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295266.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 4021221011331 its reverse (1331101221204), we get a palindrome (5352322232535).

The spelling of 4021221011331 in words is "four trillion, twenty-one billion, two hundred twenty-one million, eleven thousand, three hundred thirty-one".