2021313033221 has 8 divisors (see below), whose sum is σ = 2070914013504. Its totient is φ = 1972299047040.

The previous prime is 2021313033097. The next prime is 2021313033263. The reversal of 2021313033221 is 1223303131202.

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 2021313033221 - 2³⁰ = 2020239291397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021313038221) 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, 146741555 + ... + 146755328.

It is an arithmetic number, because the mean of its divisors is an integer number (258864251688).

Almost surely, 2^{2021313033221} is an apocalyptic number.

It is an amenable number.

2021313033221 is a deficient number, since it is larger than the sum of its proper divisors (49600980283).

2021313033221 is an equidigital number, since it uses as much as digits as its factorization.

2021313033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293497051.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2021313033221 its reverse (1223303131202), we get a palindrome (3244616164423).

The spelling of 2021313033221 in words is "two trillion, twenty-one billion, three hundred thirteen million, thirty-three thousand, two hundred twenty-one".