21214313121203 has 2 divisors, whose sum is σ = 21214313121204. Its totient is φ = 21214313121202.

The previous prime is 21214313121181. The next prime is 21214313121277. The reversal of 21214313121203 is 30212131341212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214313121203 - 2¹⁰ = 21214313120179 is a prime.

It is not a weakly prime, because it can be changed into another prime (21214313121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607156560601 + 10607156560602.

It is an arithmetic number, because the mean of its divisors is an integer number (10607156560602).

Almost surely, 2^{21214313121203} is an apocalyptic number.

21214313121203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214313121203 is an equidigital number, since it uses as much as digits as its factorization.

21214313121203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21214313121203 its reverse (30212131341212), we get a palindrome (51426444462415).

The spelling of 21214313121203 in words is "twenty-one trillion, two hundred fourteen billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred three".