4021433313421 has 4 divisors (see below), whose sum is σ = 4021615605952. Its totient is φ = 4021251020892.

The previous prime is 4021433313383. The next prime is 4021433313437. The reversal of 4021433313421 is 1243133341204.

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 4021433313421 - 2¹⁵ = 4021433280653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021433313721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91113171 + ... + 91157296.

It is an arithmetic number, because the mean of its divisors is an integer number (1005403901488).

Almost surely, 2^{4021433313421} is an apocalyptic number.

It is an amenable number.

4021433313421 is a deficient number, since it is larger than the sum of its proper divisors (182292531).

4021433313421 is a wasteful number, since it uses less digits than its factorization.

4021433313421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182292530.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 4021433313421 its reverse (1243133341204), we get a palindrome (5264566654625).

The spelling of 4021433313421 in words is "four trillion, twenty-one billion, four hundred thirty-three million, three hundred thirteen thousand, four hundred twenty-one".