1421241323221 has 8 divisors (see below), whose sum is σ = 1442548695744. Its totient is φ = 1399936739520.

The previous prime is 1421241323189. The next prime is 1421241323237. The reversal of 1421241323221 is 1223231421241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421241323221 - 2⁵ = 1421241323189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421241323221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421241323261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341181 + ... + 1720141.

It is an arithmetic number, because the mean of its divisors is an integer number (180318586968).

Almost surely, 2^{1421241323221} is an apocalyptic number.

It is an amenable number.

1421241323221 is a deficient number, since it is larger than the sum of its proper divisors (21307372523).

1421241323221 is a wasteful number, since it uses less digits than its factorization.

1421241323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394411.

The product of its digits is 4608, while the sum is 28.

Adding to 1421241323221 its reverse (1223231421241), we get a palindrome (2644472744462).

The spelling of 1421241323221 in words is "one trillion, four hundred twenty-one billion, two hundred forty-one million, three hundred twenty-three thousand, two hundred twenty-one".