21212314003 has 2 divisors, whose sum is σ = 21212314004. Its totient is φ = 21212314002.

The previous prime is 21212313943. The next prime is 21212314007. The reversal of 21212314003 is 30041321212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21212314003 - 2¹³ = 21212305811 is a prime.

It is not a weakly prime, because it can be changed into another prime (21212314007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606157001 + 10606157002.

It is an arithmetic number, because the mean of its divisors is an integer number (10606157002).

Almost surely, 2^21212314003 is an apocalyptic number.

21212314003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212314003 is an equidigital number, since it uses as much as digits as its factorization.

21212314003 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21212314003 its reverse (30041321212), we get a palindrome (51253635215).

The spelling of 21212314003 in words is "twenty-one billion, two hundred twelve million, three hundred fourteen thousand, three".