3448612221221 has 4 divisors (see below), whose sum is σ = 3466117867212. Its totient is φ = 3431106575232.

The previous prime is 3448612221209. The next prime is 3448612221367. The reversal of 3448612221221 is 1221222168443.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2946420312196 + 502191909025 = 1716514^2 + 708655^2 .

It is a cyclic number.

It is not a de Polignac number, because 3448612221221 - 2²⁶ = 3448545112357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3448612221421) 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, 8752822700 + ... + 8752823093.

It is an arithmetic number, because the mean of its divisors is an integer number (866529466803).

Almost surely, 2^{3448612221221} is an apocalyptic number.

It is an amenable number.

3448612221221 is a deficient number, since it is larger than the sum of its proper divisors (17505645991).

3448612221221 is a wasteful number, since it uses less digits than its factorization.

3448612221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17505645990.

The product of its digits is 73728, while the sum is 38.

Adding to 3448612221221 its reverse (1221222168443), we get a palindrome (4669834389664).

The spelling of 3448612221221 in words is "three trillion, four hundred forty-eight billion, six hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".