322002421 has 4 divisors (see below), whose sum is σ = 346771852. Its totient is φ = 297232992.

The previous prime is 322002419. The next prime is 322002431. The reversal of 322002421 is 124200223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124200223 = 7 ⋅17742889.

It can be written as a sum of positive squares in 2 ways, for example, as 62631396 + 259371025 = 7914^2 + 16105^2 .

It is a cyclic number.

It is not a de Polignac number, because 322002421 - 2¹ = 322002419 is a prime.

It is a super-2 number, since 2×322002421² = 207371118259722482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322002395 and 322002404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322002431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12384696 + ... + 12384721.

It is an arithmetic number, because the mean of its divisors is an integer number (86692963).

Almost surely, 2^322002421 is an apocalyptic number.

It is an amenable number.

322002421 is a deficient number, since it is larger than the sum of its proper divisors (24769431).

322002421 is a wasteful number, since it uses less digits than its factorization.

322002421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24769430.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 322002421 is about 17944.4259033272. The cubic root of 322002421 is about 685.4141179672.

Adding to 322002421 its reverse (124200223), we get a palindrome (446202644).

The spelling of 322002421 in words is "three hundred twenty-two million, two thousand, four hundred twenty-one".