4234442241221 has 6 divisors (see below), whose sum is σ = 4288721270022. Its totient is φ = 4180841700360.

The previous prime is 4234442241191. The next prime is 4234442241247. The reversal of 4234442241221 is 1221422444324.

It can be written as a sum of positive squares in only one way, i.e., 3217341753025 + 1017100488196 = 1793695^2 + 1008514^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4234442241221 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 (4234442241521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339237650 + ... + 339250131.

It is an arithmetic number, because the mean of its divisors is an integer number (714786878337).

Almost surely, 2^{4234442241221} is an apocalyptic number.

It is an amenable number.

4234442241221 is a deficient number, since it is larger than the sum of its proper divisors (54279028801).

4234442241221 is an frugal number, since it uses more digits than its factorization.

4234442241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678487939 (or 678487860 counting only the distinct ones).

The product of its digits is 98304, while the sum is 35.

Adding to 4234442241221 its reverse (1221422444324), we get a palindrome (5455864685545).

The spelling of 4234442241221 in words is "four trillion, two hundred thirty-four billion, four hundred forty-two million, two hundred forty-one thousand, two hundred twenty-one".