2021404320113 has 16 divisors (see below), whose sum is σ = 2082451424592. Its totient is φ = 1960941312000.

The previous prime is 2021404320107. The next prime is 2021404320137. The reversal of 2021404320113 is 3110234041202.

It can be written as a sum of positive squares in 8 ways, for example, as 138095478544 + 1883308841569 = 371612^2 + 1372337^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021404320113 - 2²⁸ = 2021135884657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021404320413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6376595 + ... + 6686087.

It is an arithmetic number, because the mean of its divisors is an integer number (130153214037).

Almost surely, 2^{2021404320113} is an apocalyptic number.

It is an amenable number.

2021404320113 is a deficient number, since it is larger than the sum of its proper divisors (61047104479).

2021404320113 is a wasteful number, since it uses less digits than its factorization.

2021404320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310436.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2021404320113 its reverse (3110234041202), we get a palindrome (5131638361315).

The spelling of 2021404320113 in words is "two trillion, twenty-one billion, four hundred four million, three hundred twenty thousand, one hundred thirteen".