21004314203 has 2 divisors, whose sum is σ = 21004314204. Its totient is φ = 21004314202.

The previous prime is 21004314197. The next prime is 21004314239. The reversal of 21004314203 is 30241340012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21004314203 - 2⁶ = 21004314139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21004314263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502157101 + 10502157102.

It is an arithmetic number, because the mean of its divisors is an integer number (10502157102).

Almost surely, 2^21004314203 is an apocalyptic number.

21004314203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004314203 is an equidigital number, since it uses as much as digits as its factorization.

21004314203 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 20.

Adding to 21004314203 its reverse (30241340012), we get a palindrome (51245654215).

The spelling of 21004314203 in words is "twenty-one billion, four million, three hundred fourteen thousand, two hundred three".