2021322321 has 48 divisors (see below), whose sum is σ = 3235371984. Its totient is φ = 1210540032.

The previous prime is 2021322313. The next prime is 2021322383. The reversal of 2021322321 is 1232231202.

2021322321 is a `hidden beast` number, since 2 + 0 + 21 + 322 + 321 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 456249600 + 1565072721 = 21360^2 + 39561^2 .

It is not a de Polignac number, because 2021322321 - 2³ = 2021322313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021322294 and 2021322303.

It is not an unprimeable number, because it can be changed into a prime (2021322311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296665 + ... + 303401.

It is an arithmetic number, because the mean of its divisors is an integer number (67403583).

Almost surely, 2^2021322321 is an apocalyptic number.

It is an amenable number.

2021322321 is a deficient number, since it is larger than the sum of its proper divisors (1214049663).

2021322321 is a wasteful number, since it uses less digits than its factorization.

2021322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850 (or 6847 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2021322321 is about 44959.1183298783. The cubic root of 2021322321 is about 1264.3826388641.

Adding to 2021322321 its reverse (1232231202), we get a palindrome (3253553523).

The spelling of 2021322321 in words is "two billion, twenty-one million, three hundred twenty-two thousand, three hundred twenty-one".