21403302141 has 48 divisors (see below), whose sum is σ = 32756811584. Its totient is φ = 12354840576.

The previous prime is 21403302139. The next prime is 21403302143. The reversal of 21403302141 is 14120330412.

It is an interprime number because it is at equal distance from previous prime (21403302139) and next prime (21403302143).

It is not a de Polignac number, because 21403302141 - 2¹ = 21403302139 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403302143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3524790 + ... + 3530856.

Almost surely, 2^21403302141 is an apocalyptic number.

It is an amenable number.

21403302141 is a deficient number, since it is larger than the sum of its proper divisors (11353509443).

21403302141 is a wasteful number, since it uses less digits than its factorization.

21403302141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21403302141 its reverse (14120330412), we get a palindrome (35523632553).

The spelling of 21403302141 in words is "twenty-one billion, four hundred three million, three hundred two thousand, one hundred forty-one".