21410043101 has 4 divisors (see below), whose sum is σ = 21501931932. Its totient is φ = 21318154272.

The previous prime is 21410043089. The next prime is 21410043139. The reversal of 21410043101 is 10134001412.

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 12083505625 + 9326537476 = 109925^2 + 96574^2 .

It is a cyclic number.

It is not a de Polignac number, because 21410043101 - 2²⁶ = 21342934237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21410043101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410043181) 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 3 ways as a sum of consecutive naturals, for example, 45944066 + ... + 45944531.

It is an arithmetic number, because the mean of its divisors is an integer number (5375482983).

Almost surely, 2^21410043101 is an apocalyptic number.

It is an amenable number.

21410043101 is a deficient number, since it is larger than the sum of its proper divisors (91888831).

21410043101 is an equidigital number, since it uses as much as digits as its factorization.

21410043101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91888830.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21410043101 its reverse (10134001412), we get a palindrome (31544044513).

The spelling of 21410043101 in words is "twenty-one billion, four hundred ten million, forty-three thousand, one hundred one".