4021444442111 has 4 divisors (see below), whose sum is σ = 4032836636352. Its totient is φ = 4010052247872.

The previous prime is 4021444442053. The next prime is 4021444442129. The reversal of 4021444442111 is 1112444441204.

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 4021444442111 - 2¹⁰ = 4021444441087 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 (4021444444111) 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, 5696096591 + ... + 5696097296.

It is an arithmetic number, because the mean of its divisors is an integer number (1008209159088).

Almost surely, 2^{4021444442111} is an apocalyptic number.

4021444442111 is a deficient number, since it is larger than the sum of its proper divisors (11392194241).

4021444442111 is a wasteful number, since it uses less digits than its factorization.

4021444442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11392194240.

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 4021444442111 its reverse (1112444441204), we get a palindrome (5133888883315).

The spelling of 4021444442111 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-two thousand, one hundred eleven".