21321113212023 has 8 divisors (see below), whose sum is σ = 30100395122928. Its totient is φ = 13377953387904.

The previous prime is 21321113211949. The next prime is 21321113212051. The reversal of 21321113212023 is 32021231112312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21321113212023 - 2¹⁴ = 21321113195639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21321113211984 and 21321113212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321113212423) 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, 209030521636 + ... + 209030521737.

It is an arithmetic number, because the mean of its divisors is an integer number (3762549390366).

Almost surely, 2^{21321113212023} is an apocalyptic number.

21321113212023 is a deficient number, since it is larger than the sum of its proper divisors (8779281910905).

21321113212023 is a wasteful number, since it uses less digits than its factorization.

21321113212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418061043393.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21321113212023 its reverse (32021231112312), we get a palindrome (53342344324335).

The spelling of 21321113212023 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirteen million, two hundred twelve thousand, twenty-three".