21302301211 has 4 divisors (see below), whose sum is σ = 21541653000. Its totient is φ = 21062949424.

The previous prime is 21302301203. The next prime is 21302301221. The reversal of 21302301211 is 11210320312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21302301211 - 2³ = 21302301203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302301221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119675761 + ... + 119675938.

It is an arithmetic number, because the mean of its divisors is an integer number (5385413250).

Almost surely, 2^21302301211 is an apocalyptic number.

21302301211 is a deficient number, since it is larger than the sum of its proper divisors (239351789).

21302301211 is an equidigital number, since it uses as much as digits as its factorization.

21302301211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239351788.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21302301211 its reverse (11210320312), we get a palindrome (32512621523).

The spelling of 21302301211 in words is "twenty-one billion, three hundred two million, three hundred one thousand, two hundred eleven".