21302211311 has 8 divisors (see below), whose sum is σ = 21717857040. Its totient is φ = 20888385408.

The previous prime is 21302211251. The next prime is 21302211331. The reversal of 21302211311 is 11311220312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21302211311 - 2³⁴ = 4122342127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21302211311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302211331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431306 + ... + 478151.

It is an arithmetic number, because the mean of its divisors is an integer number (2714732130).

Almost surely, 2^21302211311 is an apocalyptic number.

21302211311 is a deficient number, since it is larger than the sum of its proper divisors (415645729).

21302211311 is an equidigital number, since it uses as much as digits as its factorization.

21302211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909913.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21302211311 its reverse (11311220312), we get a palindrome (32613431623).

Subtracting from 21302211311 its reverse (11311220312), we obtain a palindrome (9990990999).

The spelling of 21302211311 in words is "twenty-one billion, three hundred two million, two hundred eleven thousand, three hundred eleven".