2021313221105 has 8 divisors (see below), whose sum is σ = 2430213680832. Its totient is φ = 1613958699888.

The previous prime is 2021313221077. The next prime is 2021313221107. The reversal of 2021313221105 is 5011223131202.

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 2021313221105 - 2⁶ = 2021313221041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021313221107) 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, 386481749 + ... + 386486978.

It is an arithmetic number, because the mean of its divisors is an integer number (303776710104).

Almost surely, 2^{2021313221105} is an apocalyptic number.

It is an amenable number.

2021313221105 is a deficient number, since it is larger than the sum of its proper divisors (408900459727).

2021313221105 is an equidigital number, since it uses as much as digits as its factorization.

2021313221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772969255.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 2021313221105 its reverse (5011223131202), we get a palindrome (7032536352307).

The spelling of 2021313221105 in words is "two trillion, twenty-one billion, three hundred thirteen million, two hundred twenty-one thousand, one hundred five".