21304242201 has 16 divisors (see below), whose sum is σ = 30992522688. Its totient is φ = 12909772800.

The previous prime is 21304242151. The next prime is 21304242217. The reversal of 21304242201 is 10224240312.

It is not a de Polignac number, because 21304242201 - 2⁹ = 21304241689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21304242241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201241 + ... + 288281.

It is an arithmetic number, because the mean of its divisors is an integer number (1937032668).

Almost surely, 2^21304242201 is an apocalyptic number.

It is an amenable number.

21304242201 is a deficient number, since it is larger than the sum of its proper divisors (9688280487).

21304242201 is a wasteful number, since it uses less digits than its factorization.

21304242201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94472.

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

Adding to 21304242201 its reverse (10224240312), we get a palindrome (31528482513).

The spelling of 21304242201 in words is "twenty-one billion, three hundred four million, two hundred forty-two thousand, two hundred one".