21223231020333 has 12 divisors (see below), whose sum is σ = 30655970889180. Its totient is φ = 14148731719296.

The previous prime is 21223231020317. The next prime is 21223231020361. The reversal of 21223231020333 is 33302013232212.

21223231020333 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 323 + 1 + 0 + 2 + 0 + 333 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17074729736964 + 4148501283369 = 4132158^2 + 2036787^2 .

It is not a de Polignac number, because 21223231020333 - 2⁴ = 21223231020317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223231020297 and 21223231020306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223231020133) 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, 5885916 + ... + 8780117.

It is an arithmetic number, because the mean of its divisors is an integer number (2554664240765).

Almost surely, 2^{21223231020333} is an apocalyptic number.

It is an amenable number.

21223231020333 is a deficient number, since it is larger than the sum of its proper divisors (9432739868847).

21223231020333 is a wasteful number, since it uses less digits than its factorization.

21223231020333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826828 (or 14826825 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21223231020333 its reverse (33302013232212), we get a palindrome (54525244252545).

The spelling of 21223231020333 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-one million, twenty thousand, three hundred thirty-three".