212121212221003 has 2 divisors, whose sum is σ = 212121212221004. Its totient is φ = 212121212221002.

The previous prime is 212121212221001. The next prime is 212121212221117. The reversal of 212121212221003 is 300122212121212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212121212221003 - 2¹ = 212121212221001 is a prime.

It is a super-2 number, since 2×212121212221003² (a number of 29 digits) contains 22 as substring.

Together with 212121212221001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212121212221001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060606110501 + 106060606110502.

It is an arithmetic number, because the mean of its divisors is an integer number (106060606110502).

Almost surely, 2^{212121212221003} is an apocalyptic number.

212121212221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121212221003 is an equidigital number, since it uses as much as digits as its factorization.

212121212221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212121212221003 its reverse (300122212121212), we get a palindrome (512243424342215).

The spelling of 212121212221003 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, three".