1212001223 has 2 divisors, whose sum is σ = 1212001224. Its totient is φ = 1212001222.

The previous prime is 1212001211. The next prime is 1212001243. The reversal of 1212001223 is 3221002121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212001223 - 2²⁴ = 1195224007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212001198 and 1212001207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212001243) 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, 606000611 + 606000612.

It is an arithmetic number, because the mean of its divisors is an integer number (606000612).

Almost surely, 2^1212001223 is an apocalyptic number.

1212001223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212001223 is an equidigital number, since it uses as much as digits as its factorization.

1212001223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212001223 is about 34813.8079359325. The cubic root of 1212001223 is about 1066.1893808796.

Adding to 1212001223 its reverse (3221002121), we get a palindrome (4433003344).

The spelling of 1212001223 in words is "one billion, two hundred twelve million, one thousand, two hundred twenty-three".