21320340233041 has 4 divisors (see below), whose sum is σ = 21320400889012. Its totient is φ = 21320279577072.

The previous prime is 21320340232999. The next prime is 21320340233057. The reversal of 21320340233041 is 14033204302312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1009229196816 + 20311111036225 = 1004604^2 + 4506785^2 .

It is a cyclic number.

It is not a de Polignac number, because 21320340233041 - 2³¹ = 21318192749393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320340233741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29797650 + ... + 30504763.

It is an arithmetic number, because the mean of its divisors is an integer number (5330100222253).

Almost surely, 2^{21320340233041} is an apocalyptic number.

It is an amenable number.

21320340233041 is a deficient number, since it is larger than the sum of its proper divisors (60655971).

21320340233041 is an equidigital number, since it uses as much as digits as its factorization.

21320340233041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60655970.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21320340233041 its reverse (14033204302312), we get a palindrome (35353544535353).

The spelling of 21320340233041 in words is "twenty-one trillion, three hundred twenty billion, three hundred forty million, two hundred thirty-three thousand, forty-one".