21041050331335 has 4 divisors (see below), whose sum is σ = 25249260397608. Its totient is φ = 16832840265064.

The previous prime is 21041050331333. The next prime is 21041050331339. The reversal of 21041050331335 is 53313305014012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21041050331335 - 2¹ = 21041050331333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21041050331297 and 21041050331306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041050331333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2104105033129 + ... + 2104105033138.

It is an arithmetic number, because the mean of its divisors is an integer number (6312315099402).

Almost surely, 2^{21041050331335} is an apocalyptic number.

21041050331335 is a deficient number, since it is larger than the sum of its proper divisors (4208210066273).

21041050331335 is an equidigital number, since it uses as much as digits as its factorization.

21041050331335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208210066272.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 21041050331335 its reverse (53313305014012), we get a palindrome (74354355345347).

The spelling of 21041050331335 in words is "twenty-one trillion, forty-one billion, fifty million, three hundred thirty-one thousand, three hundred thirty-five".