2021312213 has 8 divisors (see below), whose sum is σ = 2062954080. Its totient is φ = 1980007920.

The previous prime is 2021312203. The next prime is 2021312233. The reversal of 2021312213 is 3122131202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021312213 - 2⁶ = 2021312149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021312191 and 2021312200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021312203) 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, 72278 + ... + 96263.

It is an arithmetic number, because the mean of its divisors is an integer number (257869260).

Almost surely, 2^2021312213 is an apocalyptic number.

It is an amenable number.

2021312213 is a deficient number, since it is larger than the sum of its proper divisors (41641867).

2021312213 is a wasteful number, since it uses less digits than its factorization.

2021312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168787.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2021312213 is about 44959.0059165013. The cubic root of 2021312213 is about 1264.3805312667.

Adding to 2021312213 its reverse (3122131202), we get a palindrome (5143443415).

The spelling of 2021312213 in words is "two billion, twenty-one million, three hundred twelve thousand, two hundred thirteen".