1421342321221 has 8 divisors (see below), whose sum is σ = 1483161568704. Its totient is φ = 1359524886720.

The previous prime is 1421342321219. The next prime is 1421342321233. The reversal of 1421342321221 is 1221232431241.

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 1421342321221 - 2¹ = 1421342321219 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 1421342321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421342361221) 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, 1291806 + ... + 2124016.

It is an arithmetic number, because the mean of its divisors is an integer number (185395196088).

Almost surely, 2^{1421342321221} is an apocalyptic number.

It is an amenable number.

1421342321221 is a deficient number, since it is larger than the sum of its proper divisors (61819247483).

1421342321221 is an equidigital number, since it uses as much as digits as its factorization.

1421342321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906491.

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

Adding to 1421342321221 its reverse (1221232431241), we get a palindrome (2642574752462).

The spelling of 1421342321221 in words is "one trillion, four hundred twenty-one billion, three hundred forty-two million, three hundred twenty-one thousand, two hundred twenty-one".