21113320122203 has 2 divisors, whose sum is σ = 21113320122204. Its totient is φ = 21113320122202.

The previous prime is 21113320122199. The next prime is 21113320122241. The reversal of 21113320122203 is 30222102331112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21113320122203 - 2² = 21113320122199 is a prime.

It is not a weakly prime, because it can be changed into another prime (21113320122263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556660061101 + 10556660061102.

It is an arithmetic number, because the mean of its divisors is an integer number (10556660061102).

Almost surely, 2^{21113320122203} is an apocalyptic number.

21113320122203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113320122203 is an equidigital number, since it uses as much as digits as its factorization.

21113320122203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21113320122203 its reverse (30222102331112), we get a palindrome (51335422453315).

The spelling of 21113320122203 in words is "twenty-one trillion, one hundred thirteen billion, three hundred twenty million, one hundred twenty-two thousand, two hundred three".