322020021 has 4 divisors (see below), whose sum is σ = 429360032. Its totient is φ = 214680012.

The previous prime is 322020019. The next prime is 322020047. The reversal of 322020021 is 120020223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120020223 = 3 ⋅40006741.

It is not a de Polignac number, because 322020021 - 2¹ = 322020019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322019979 and 322020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322020071) 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, 53670001 + ... + 53670006.

It is an arithmetic number, because the mean of its divisors is an integer number (107340008).

Almost surely, 2^322020021 is an apocalyptic number.

It is an amenable number.

322020021 is a deficient number, since it is larger than the sum of its proper divisors (107340011).

322020021 is a wasteful number, since it uses less digits than its factorization.

322020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107340010.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 322020021 is about 17944.9162996098. The cubic root of 322020021 is about 685.4266055220.

Adding to 322020021 its reverse (120020223), we get a palindrome (442040244).

The spelling of 322020021 in words is "three hundred twenty-two million, twenty thousand, twenty-one".