21102234103 has 2 divisors, whose sum is σ = 21102234104. Its totient is φ = 21102234102.

The previous prime is 21102234067. The next prime is 21102234121. The reversal of 21102234103 is 30143220112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21102234103 - 2²⁹ = 20565363191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102234403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551117051 + 10551117052.

It is an arithmetic number, because the mean of its divisors is an integer number (10551117052).

Almost surely, 2^21102234103 is an apocalyptic number.

21102234103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102234103 is an equidigital number, since it uses as much as digits as its factorization.

21102234103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21102234103 its reverse (30143220112), we get a palindrome (51245454215).

The spelling of 21102234103 in words is "twenty-one billion, one hundred two million, two hundred thirty-four thousand, one hundred three".