21303244201 has 16 divisors (see below), whose sum is σ = 22727059200. Its totient is φ = 19910112768.

The previous prime is 21303244177. The next prime is 21303244211. The reversal of 21303244201 is 10244230312.

It is a de Polignac number, because none of the positive numbers 2^k-21303244201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303244211) 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, 2055705 + ... + 2066041.

It is an arithmetic number, because the mean of its divisors is an integer number (1420441200).

Almost surely, 2^21303244201 is an apocalyptic number.

It is an amenable number.

21303244201 is a deficient number, since it is larger than the sum of its proper divisors (1423814999).

21303244201 is a wasteful number, since it uses less digits than its factorization.

21303244201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21303244201 its reverse (10244230312), we get a palindrome (31547474513).

The spelling of 21303244201 in words is "twenty-one billion, three hundred three million, two hundred forty-four thousand, two hundred one".