21200012200023 has 8 divisors (see below), whose sum is σ = 28267053895536. Its totient is φ = 14133155985600.

The previous prime is 21200012200001. The next prime is 21200012200099. The reversal of 21200012200023 is 32000221000212.

It is a happy number.

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

It is not a de Polignac number, because 21200012200023 - 2²⁰ = 21200011151447 is a prime.

It is a super-3 number, since 3×21200012200023³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21200012199975 and 21200012200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200012202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46103358 + ... + 46560923.

It is an arithmetic number, because the mean of its divisors is an integer number (3533381736942).

Almost surely, 2^{21200012200023} is an apocalyptic number.

21200012200023 is a deficient number, since it is larger than the sum of its proper divisors (7067041695513).

21200012200023 is an equidigital number, since it uses as much as digits as its factorization.

21200012200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92740545.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21200012200023 its reverse (32000221000212), we get a palindrome (53200233200235).

The spelling of 21200012200023 in words is "twenty-one trillion, two hundred billion, twelve million, two hundred thousand, twenty-three".