21223223230311 has 12 divisors (see below), whose sum is σ = 30655941786288. Its totient is φ = 14148734764704.

The previous prime is 21223223230247. The next prime is 21223223230397. The reversal of 21223223230311 is 11303232232212.

21223223230311 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 22 + 323 + 0 + 311 = 666.

It is not a de Polignac number, because 21223223230311 - 2⁶ = 21223223230247 is a prime.

It is a super-2 number, since 2×21223223230311² (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 (21223223230211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5039430 + ... + 8236643.

It is an arithmetic number, because the mean of its divisors is an integer number (2554661815524).

Almost surely, 2^{21223223230311} is an apocalyptic number.

21223223230311 is a deficient number, since it is larger than the sum of its proper divisors (9432718555977).

21223223230311 is a wasteful number, since it uses less digits than its factorization.

21223223230311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453702 (or 13453699 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21223223230311 its reverse (11303232232212), we get a palindrome (32526455462523).

The spelling of 21223223230311 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred thirty thousand, three hundred eleven".