2021213313 has 24 divisors (see below), whose sum is σ = 3369652416. Its totient is φ = 1143540000.

The previous prime is 2021213309. The next prime is 2021213339. The reversal of 2021213313 is 3133121202.

It is not a de Polignac number, because 2021213313 - 2² = 2021213309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021213213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152463 + ... + 165188.

It is an arithmetic number, because the mean of its divisors is an integer number (140402184).

Almost surely, 2^2021213313 is an apocalyptic number.

It is an amenable number.

2021213313 is a deficient number, since it is larger than the sum of its proper divisors (1348439103).

2021213313 is a wasteful number, since it uses less digits than its factorization.

2021213313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317765 (or 317762 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2021213313 is about 44957.9060121799. The cubic root of 2021213313 is about 1264.3599094691.

Adding to 2021213313 its reverse (3133121202), we get a palindrome (5154334515).

The spelling of 2021213313 in words is "two billion, twenty-one million, two hundred thirteen thousand, three hundred thirteen".