21031003100227 has 2 divisors, whose sum is σ = 21031003100228. Its totient is φ = 21031003100226.

The previous prime is 21031003100221. The next prime is 21031003100249. The reversal of 21031003100227 is 72200130013012.

It is a happy number.

It is an a-pointer prime, because the next prime (21031003100249) can be obtained adding 21031003100227 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21031003100227 - 2¹⁹ = 21031002575939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21031003100198 and 21031003100207.

It is not a weakly prime, because it can be changed into another prime (21031003100221) 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, 10515501550113 + 10515501550114.

It is an arithmetic number, because the mean of its divisors is an integer number (10515501550114).

Almost surely, 2^{21031003100227} is an apocalyptic number.

21031003100227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21031003100227 is an equidigital number, since it uses as much as digits as its factorization.

21031003100227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 21031003100227 its reverse (72200130013012), we get a palindrome (93231133113239).

The spelling of 21031003100227 in words is "twenty-one trillion, thirty-one billion, three million, one hundred thousand, two hundred twenty-seven".