1212103223 has 2 divisors, whose sum is σ = 1212103224. Its totient is φ = 1212103222.

The previous prime is 1212103219. The next prime is 1212103237. The reversal of 1212103223 is 3223012121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212103223 - 2² = 1212103219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212103523) 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, 606051611 + 606051612.

It is an arithmetic number, because the mean of its divisors is an integer number (606051612).

Almost surely, 2^1212103223 is an apocalyptic number.

1212103223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212103223 is an equidigital number, since it uses as much as digits as its factorization.

1212103223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212103223 is about 34815.2728410966. The cubic root of 1212103223 is about 1066.2192896135.

Adding to 1212103223 its reverse (3223012121), we get a palindrome (4435115344).

The spelling of 1212103223 in words is "one billion, two hundred twelve million, one hundred three thousand, two hundred twenty-three".