21150110203 has 2 divisors, whose sum is σ = 21150110204. Its totient is φ = 21150110202.

The previous prime is 21150110171. The next prime is 21150110209. The reversal of 21150110203 is 30201105112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21150110203 - 2⁵ = 21150110171 is a prime.

It is not a weakly prime, because it can be changed into another prime (21150110209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10575055101 + 10575055102.

It is an arithmetic number, because the mean of its divisors is an integer number (10575055102).

Almost surely, 2^21150110203 is an apocalyptic number.

21150110203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21150110203 is an equidigital number, since it uses as much as digits as its factorization.

21150110203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 21150110203 its reverse (30201105112), we get a palindrome (51351215315).

The spelling of 21150110203 in words is "twenty-one billion, one hundred fifty million, one hundred ten thousand, two hundred three".