21321033200111 has 2 divisors, whose sum is σ = 21321033200112. Its totient is φ = 21321033200110.

The previous prime is 21321033200023. The next prime is 21321033200191. The reversal of 21321033200111 is 11100233012312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21321033200111 - 2¹⁴ = 21321033183727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21321033200191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660516600055 + 10660516600056.

It is an arithmetic number, because the mean of its divisors is an integer number (10660516600056).

Almost surely, 2^{21321033200111} is an apocalyptic number.

21321033200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21321033200111 is an equidigital number, since it uses as much as digits as its factorization.

21321033200111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21321033200111 its reverse (11100233012312), we get a palindrome (32421266212423).

The spelling of 21321033200111 in words is "twenty-one trillion, three hundred twenty-one billion, thirty-three million, two hundred thousand, one hundred eleven".