21300011323231 has 16 divisors (see below), whose sum is σ = 22653633467520. Its totient is φ = 19957689999360.

The previous prime is 21300011323223. The next prime is 21300011323273. The reversal of 21300011323231 is 13232311000312.

It is a cyclic number.

It is not a de Polignac number, because 21300011323231 - 2³ = 21300011323223 is a prime.

It is a super-2 number, since 2×21300011323231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300011321231) 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, 4192935 + ... + 7757623.

It is an arithmetic number, because the mean of its divisors is an integer number (1415852091720).

Almost surely, 2^{21300011323231} is an apocalyptic number.

21300011323231 is a deficient number, since it is larger than the sum of its proper divisors (1353622144289).

21300011323231 is a wasteful number, since it uses less digits than its factorization.

21300011323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566274.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21300011323231 its reverse (13232311000312), we get a palindrome (34532322323543).

The spelling of 21300011323231 in words is "twenty-one trillion, three hundred billion, eleven million, three hundred twenty-three thousand, two hundred thirty-one".