1200223123291 has 2 divisors, whose sum is σ = 1200223123292. Its totient is φ = 1200223123290.

The previous prime is 1200223123289. The next prime is 1200223123313. The reversal of 1200223123291 is 1923213220021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200223123291 - 2¹ = 1200223123289 is a prime.

Together with 1200223123289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200223123091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600111561645 + 600111561646.

It is an arithmetic number, because the mean of its divisors is an integer number (600111561646).

Almost surely, 2^{1200223123291} is an apocalyptic number.

1200223123291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200223123291 is an equidigital number, since it uses as much as digits as its factorization.

1200223123291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 1200223123291 in words is "one trillion, two hundred billion, two hundred twenty-three million, one hundred twenty-three thousand, two hundred ninety-one".