103535440021 has 8 divisors (see below), whose sum is σ = 111511988280. Its totient is φ = 95560646592.

The previous prime is 103535440003. The next prime is 103535440049. The reversal of 103535440021 is 120044535301.

It can be written as a sum of positive squares in 4 ways, for example, as 8480383921 + 95055056100 = 92089^2 + 308310^2 .

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 103535440021 - 2⁹ = 103535439509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103538440021) 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, 314866 + ... + 553363.

It is an arithmetic number, because the mean of its divisors is an integer number (13938998535).

Almost surely, 2^103535440021 is an apocalyptic number.

It is an amenable number.

103535440021 is a deficient number, since it is larger than the sum of its proper divisors (7976548259).

103535440021 is an equidigital number, since it uses as much as digits as its factorization.

103535440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877415.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 103535440021 its reverse (120044535301), we get a palindrome (223579975322).

The spelling of 103535440021 in words is "one hundred three billion, five hundred thirty-five million, four hundred forty thousand, twenty-one".