21242332413 has 12 divisors (see below), whose sum is σ = 30684802720. Its totient is φ = 14160893256.

The previous prime is 21242332373. The next prime is 21242332453. The reversal of 21242332413 is 31423324212.

21242332413 is a `hidden beast` number, since 2 + 1 + 242 + 3 + 3 + 2 + 413 = 666.

It is an interprime number because it is at equal distance from previous prime (21242332373) and next prime (21242332453).

It is not a de Polignac number, because 21242332413 - 2¹⁰ = 21242331389 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 (21242332453) 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 11 ways as a sum of consecutive naturals, for example, 220920 + ... + 302142.

Almost surely, 2^21242332413 is an apocalyptic number.

It is an amenable number.

21242332413 is a deficient number, since it is larger than the sum of its proper divisors (9442470307).

21242332413 is a wasteful number, since it uses less digits than its factorization.

21242332413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110288 (or 110285 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21242332413 its reverse (31423324212), we get a palindrome (52665656625).

The spelling of 21242332413 in words is "twenty-one billion, two hundred forty-two million, three hundred thirty-two thousand, four hundred thirteen".