4021120043431 has 4 divisors (see below), whose sum is σ = 4257656516592. Its totient is φ = 3784583570272.

The previous prime is 4021120043417. The next prime is 4021120043443. The reversal of 4021120043431 is 1343400211204.

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

It is a cyclic number.

It is not a de Polignac number, because 4021120043431 - 2¹¹ = 4021120041383 is a prime.

It is a super-2 number, since 2×4021120043431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021120043396 and 4021120043405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021120043471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118268236555 + ... + 118268236588.

It is an arithmetic number, because the mean of its divisors is an integer number (1064414129148).

Almost surely, 2^{4021120043431} is an apocalyptic number.

4021120043431 is a deficient number, since it is larger than the sum of its proper divisors (236536473161).

4021120043431 is a wasteful number, since it uses less digits than its factorization.

4021120043431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236536473160.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 4021120043431 its reverse (1343400211204), we get a palindrome (5364520254635).

The spelling of 4021120043431 in words is "four trillion, twenty-one billion, one hundred twenty million, forty-three thousand, four hundred thirty-one".