20340221203 has 2 divisors, whose sum is σ = 20340221204. Its totient is φ = 20340221202.

The previous prime is 20340221147. The next prime is 20340221263. The reversal of 20340221203 is 30212204302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20340221203 - 2²⁹ = 19803350291 is a prime.

It is not a weakly prime, because it can be changed into another prime (20340221263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170110601 + 10170110602.

It is an arithmetic number, because the mean of its divisors is an integer number (10170110602).

Almost surely, 2^20340221203 is an apocalyptic number.

20340221203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340221203 is an equidigital number, since it uses as much as digits as its factorization.

20340221203 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 20340221203 its reverse (30212204302), we get a palindrome (50552425505).

The spelling of 20340221203 in words is "twenty billion, three hundred forty million, two hundred twenty-one thousand, two hundred three".