21202424413 has 8 divisors (see below), whose sum is σ = 21249527040. Its totient is φ = 21155363040.

The previous prime is 21202424377. The next prime is 21202424417. The reversal of 21202424413 is 31442420212.

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 21202424413 - 2²¹ = 21200327261 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 (21202424417) 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, 1163073 + ... + 1181161.

It is an arithmetic number, because the mean of its divisors is an integer number (2656190880).

Almost surely, 2^21202424413 is an apocalyptic number.

It is an amenable number.

21202424413 is a deficient number, since it is larger than the sum of its proper divisors (47102627).

21202424413 is a wasteful number, since it uses less digits than its factorization.

21202424413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20627.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21202424413 its reverse (31442420212), we get a palindrome (52644844625).

The spelling of 21202424413 in words is "twenty-one billion, two hundred two million, four hundred twenty-four thousand, four hundred thirteen".