105335421042421 has 4 divisors (see below), whose sum is σ = 105343901484844. Its totient is φ = 105326940600000.

The previous prime is 105335421042419. The next prime is 105335421042497. The reversal of 105335421042421 is 124240124533501.

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 95944199502321 + 9391221540100 = 9795111^2 + 3064510^2 .

It is a cyclic number.

It is not a de Polignac number, because 105335421042421 - 2¹ = 105335421042419 is a prime.

It is a super-2 number, since 2×105335421042421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105335421042721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4240202580 + ... + 4240227421.

It is an arithmetic number, because the mean of its divisors is an integer number (26335975371211).

Almost surely, 2^{105335421042421} is an apocalyptic number.

It is an amenable number.

105335421042421 is a deficient number, since it is larger than the sum of its proper divisors (8480442423).

105335421042421 is an equidigital number, since it uses as much as digits as its factorization.

105335421042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480442422.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 105335421042421 its reverse (124240124533501), we get a palindrome (229575545575922).

The spelling of 105335421042421 in words is "one hundred five trillion, three hundred thirty-five billion, four hundred twenty-one million, forty-two thousand, four hundred twenty-one".