21200111012023 has 2 divisors, whose sum is σ = 21200111012024. Its totient is φ = 21200111012022.

The previous prime is 21200111011993. The next prime is 21200111012071. The reversal of 21200111012023 is 32021011100212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21200111012023 - 2¹³ = 21200111003831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200111011988 and 21200111012006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200111012623) 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 as a sum of consecutive naturals, namely, 10600055506011 + 10600055506012.

It is an arithmetic number, because the mean of its divisors is an integer number (10600055506012).

Almost surely, 2^{21200111012023} is an apocalyptic number.

21200111012023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200111012023 is an equidigital number, since it uses as much as digits as its factorization.

21200111012023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21200111012023 its reverse (32021011100212), we get a palindrome (53221122112235).

The spelling of 21200111012023 in words is "twenty-one trillion, two hundred billion, one hundred eleven million, twelve thousand, twenty-three".