4021221012343 has 4 divisors (see below), whose sum is σ = 4021500530520. Its totient is φ = 4020941494168.

The previous prime is 4021221012323. The next prime is 4021221012377. The reversal of 4021221012343 is 3432101221204.

4021221012343 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4021221012343 - 2⁵ = 4021221012311 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 (4021221012323) 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, 139737508 + ... + 139766281.

It is an arithmetic number, because the mean of its divisors is an integer number (1005375132630).

Almost surely, 2^{4021221012343} is an apocalyptic number.

4021221012343 is a deficient number, since it is larger than the sum of its proper divisors (279518177).

4021221012343 is a wasteful number, since it uses less digits than its factorization.

4021221012343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279518176.

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

Adding to 4021221012343 its reverse (3432101221204), we get a palindrome (7453322233547).

The spelling of 4021221012343 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, three hundred forty-three".