21302302012311 has 4 divisors (see below), whose sum is σ = 28403069349752. Its totient is φ = 14201534674872.

The previous prime is 21302302012307. The next prime is 21302302012361. The reversal of 21302302012311 is 11321020320312.

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

It is not a de Polignac number, because 21302302012311 - 2² = 21302302012307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302302012361) 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, 3550383668716 + ... + 3550383668721.

It is an arithmetic number, because the mean of its divisors is an integer number (7100767337438).

Almost surely, 2^{21302302012311} is an apocalyptic number.

21302302012311 is a deficient number, since it is larger than the sum of its proper divisors (7100767337441).

21302302012311 is an equidigital number, since it uses as much as digits as its factorization.

21302302012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100767337440.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21302302012311 its reverse (11321020320312), we get a palindrome (32623322332623).

The spelling of 21302302012311 in words is "twenty-one trillion, three hundred two billion, three hundred two million, twelve thousand, three hundred eleven".