21233013133333 has 4 divisors (see below), whose sum is σ = 22482013905900. Its totient is φ = 19984012360768.

The previous prime is 21233013133331. The next prime is 21233013133349. The reversal of 21233013133333 is 33333131033212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6651437005444 + 14581576127889 = 2579038^2 + 3818583^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233013133333 - 2¹ = 21233013133331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233013133295 and 21233013133304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233013133331) 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, 624500386258 + ... + 624500386291.

It is an arithmetic number, because the mean of its divisors is an integer number (5620503476475).

Almost surely, 2^{21233013133333} is an apocalyptic number.

It is an amenable number.

21233013133333 is a deficient number, since it is larger than the sum of its proper divisors (1249000772567).

21233013133333 is a wasteful number, since it uses less digits than its factorization.

21233013133333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249000772566.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 21233013133333 its reverse (33333131033212), we get a palindrome (54566144166545).

The spelling of 21233013133333 in words is "twenty-one trillion, two hundred thirty-three billion, thirteen million, one hundred thirty-three thousand, three hundred thirty-three".