21011303013223 has 8 divisors (see below), whose sum is σ = 21167012401920. Its totient is φ = 20855627569920.

The previous prime is 21011303013203. The next prime is 21011303013227. The reversal of 21011303013223 is 32231030311012.

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 21011303013223 - 2¹³ = 21011303005031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21011303013194 and 21011303013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011303013227) 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, 7243143 + ... + 9720376.

It is an arithmetic number, because the mean of its divisors is an integer number (2645876550240).

Almost surely, 2^{21011303013223} is an apocalyptic number.

21011303013223 is a deficient number, since it is larger than the sum of its proper divisors (155709388697).

21011303013223 is a wasteful number, since it uses less digits than its factorization.

21011303013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16972697.

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

Adding to 21011303013223 its reverse (32231030311012), we get a palindrome (53242333324235).

The spelling of 21011303013223 in words is "twenty-one trillion, eleven billion, three hundred three million, thirteen thousand, two hundred twenty-three".