2021321330 has 16 divisors (see below), whose sum is σ = 4158146880. Its totient is φ = 693024432.

The previous prime is 2021321299. The next prime is 2021321333. The reversal of 2021321330 is 331231202.

It is a super-2 number, since 2×2021321330² = 8171479838225937800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021321299 and 2021321308.

It is not an unprimeable number, because it can be changed into a prime (2021321333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14437940 + ... + 14438079.

It is an arithmetic number, because the mean of its divisors is an integer number (259884180).

Almost surely, 2^2021321330 is an apocalyptic number.

2021321330 is an abundant number, since it is smaller than the sum of its proper divisors (2136825550).

2021321330 is a wasteful number, since it uses less digits than its factorization.

2021321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28876033.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2021321330 is about 44959.1073087534. The cubic root of 2021321330 is about 1264.3824322331.

Adding to 2021321330 its reverse (331231202), we get a palindrome (2352552532).

The spelling of 2021321330 in words is "two billion, twenty-one million, three hundred twenty-one thousand, three hundred thirty".