21230111201303 has 2 divisors, whose sum is σ = 21230111201304. Its totient is φ = 21230111201302.

The previous prime is 21230111201279. The next prime is 21230111201309. The reversal of 21230111201303 is 30310211103212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21230111201303 - 2⁶ = 21230111201239 is a prime.

It is a super-2 number, since 2×21230111201303² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230111201309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615055600651 + 10615055600652.

It is an arithmetic number, because the mean of its divisors is an integer number (10615055600652).

Almost surely, 2^{21230111201303} is an apocalyptic number.

21230111201303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230111201303 is an equidigital number, since it uses as much as digits as its factorization.

21230111201303 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21230111201303 its reverse (30310211103212), we get a palindrome (51540322304515).

The spelling of 21230111201303 in words is "twenty-one trillion, two hundred thirty billion, one hundred eleven million, two hundred one thousand, three hundred three".