21342200203 has 2 divisors, whose sum is σ = 21342200204. Its totient is φ = 21342200202.

The previous prime is 21342200179. The next prime is 21342200221. The reversal of 21342200203 is 30200224312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342200203 - 2⁹ = 21342199691 is a prime.

It is not a weakly prime, because it can be changed into another prime (21342200293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671100101 + 10671100102.

It is an arithmetic number, because the mean of its divisors is an integer number (10671100102).

Almost surely, 2^21342200203 is an apocalyptic number.

21342200203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342200203 is an equidigital number, since it uses as much as digits as its factorization.

21342200203 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 19.

Adding to 21342200203 its reverse (30200224312), we get a palindrome (51542424515).

The spelling of 21342200203 in words is "twenty-one billion, three hundred forty-two million, two hundred thousand, two hundred three".