5344144421221 has 4 divisors (see below), whose sum is σ = 5344175962944. Its totient is φ = 5344112879500.

The previous prime is 5344144421149. The next prime is 5344144421261. The reversal of 5344144421221 is 1221244414435.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5344144421221 - 2²¹ = 5344142324069 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 (5344144421261) 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, 15515335 + ... + 15856036.

It is an arithmetic number, because the mean of its divisors is an integer number (1336043990736).

Almost surely, 2^{5344144421221} is an apocalyptic number.

It is an amenable number.

5344144421221 is a deficient number, since it is larger than the sum of its proper divisors (31541723).

5344144421221 is a wasteful number, since it uses less digits than its factorization.

5344144421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31541722.

The product of its digits is 122880, while the sum is 37.

Adding to 5344144421221 its reverse (1221244414435), we get a palindrome (6565388835656).

The spelling of 5344144421221 in words is "five trillion, three hundred forty-four billion, one hundred forty-four million, four hundred twenty-one thousand, two hundred twenty-one".