21202301205 has 40 divisors (see below), whose sum is σ = 38044014624. Its totient is φ = 11296908000.

The previous prime is 21202301189. The next prime is 21202301221. The reversal of 21202301205 is 50210320212.

It is an interprime number because it is at equal distance from previous prime (21202301189) and next prime (21202301221).

It is not a de Polignac number, because 21202301205 - 2⁴ = 21202301189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 400750 + ... + 450560.

Almost surely, 2^21202301205 is an apocalyptic number.

It is an amenable number.

21202301205 is a deficient number, since it is larger than the sum of its proper divisors (16841713419).

21202301205 is a wasteful number, since it uses less digits than its factorization.

21202301205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50879 (or 50870 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 21202301205 its reverse (50210320212), we get a palindrome (71412621417).

The spelling of 21202301205 in words is "twenty-one billion, two hundred two million, three hundred one thousand, two hundred five".