21202430241 has 8 divisors (see below), whose sum is σ = 28274601600. Its totient is φ = 14132606192.

The previous prime is 21202430233. The next prime is 21202430269. The reversal of 21202430241 is 14203420212.

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 21202430241 - 2³ = 21202430233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202430441) 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, 565641 + ... + 601958.

It is an arithmetic number, because the mean of its divisors is an integer number (3534325200).

Almost surely, 2^21202430241 is an apocalyptic number.

It is an amenable number.

21202430241 is a deficient number, since it is larger than the sum of its proper divisors (7072171359).

21202430241 is a wasteful number, since it uses less digits than its factorization.

21202430241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173655.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21202430241 its reverse (14203420212), we get a palindrome (35405850453).

The spelling of 21202430241 in words is "twenty-one billion, two hundred two million, four hundred thirty thousand, two hundred forty-one".