321420223141 has 4 divisors (see below), whose sum is σ = 321421691052. Its totient is φ = 321418755232.

The previous prime is 321420223139. The next prime is 321420223193. The reversal of 321420223141 is 141322024123.

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 22222163041 + 299198060100 = 149071^2 + 546990^2 .

It is a cyclic number.

It is not a de Polignac number, because 321420223141 - 2¹ = 321420223139 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 (321420223441) 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, 332206 + ... + 867871.

It is an arithmetic number, because the mean of its divisors is an integer number (80355422763).

Almost surely, 2^321420223141 is an apocalyptic number.

It is an amenable number.

321420223141 is a deficient number, since it is larger than the sum of its proper divisors (1467911).

321420223141 is a wasteful number, since it uses less digits than its factorization.

321420223141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467910.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 321420223141 its reverse (141322024123), we get a palindrome (462742247264).

The spelling of 321420223141 in words is "three hundred twenty-one billion, four hundred twenty million, two hundred twenty-three thousand, one hundred forty-one".