321224213341421 has 4 divisors (see below), whose sum is σ = 345933768213852. Its totient is φ = 296514658468992.

The previous prime is 321224213341357. The next prime is 321224213341439. The reversal of 321224213341421 is 124143312422123.

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 76726895653321 + 244497317688100 = 8759389^2 + 15636410^2 .

It is a cyclic number.

It is not a de Polignac number, because 321224213341421 - 2⁶ = 321224213341357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321224213341621) 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, 12354777436196 + ... + 12354777436221.

It is an arithmetic number, because the mean of its divisors is an integer number (86483442053463).

Almost surely, 2^{321224213341421} is an apocalyptic number.

It is an amenable number.

321224213341421 is a deficient number, since it is larger than the sum of its proper divisors (24709554872431).

321224213341421 is a wasteful number, since it uses less digits than its factorization.

321224213341421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24709554872430.

The product of its digits is 55296, while the sum is 35.

Adding to 321224213341421 its reverse (124143312422123), we get a palindrome (445367525763544).

The spelling of 321224213341421 in words is "three hundred twenty-one trillion, two hundred twenty-four billion, two hundred thirteen million, three hundred forty-one thousand, four hundred twenty-one".