21242160103 has 2 divisors, whose sum is σ = 21242160104. Its totient is φ = 21242160102.

The previous prime is 21242160083. The next prime is 21242160119. The reversal of 21242160103 is 30106124212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21242160103 - 2²⁹ = 20705289191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21242160133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10621080051 + 10621080052.

It is an arithmetic number, because the mean of its divisors is an integer number (10621080052).

Almost surely, 2^21242160103 is an apocalyptic number.

21242160103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21242160103 is an equidigital number, since it uses as much as digits as its factorization.

21242160103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21242160103 its reverse (30106124212), we get a palindrome (51348284315).

The spelling of 21242160103 in words is "twenty-one billion, two hundred forty-two million, one hundred sixty thousand, one hundred three".