1200223123091 has 2 divisors, whose sum is σ = 1200223123092. Its totient is φ = 1200223123090.

The previous prime is 1200223123087. The next prime is 1200223123207. The reversal of 1200223123091 is 1903213220021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200223123091 - 2² = 1200223123087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200223123091.

It is not a weakly prime, because it can be changed into another prime (1200223123291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600111561545 + 600111561546.

It is an arithmetic number, because the mean of its divisors is an integer number (600111561546).

Almost surely, 2^{1200223123091} is an apocalyptic number.

1200223123091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200223123091 is an equidigital number, since it uses as much as digits as its factorization.

1200223123091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 1200223123091 in words is "one trillion, two hundred billion, two hundred twenty-three million, one hundred twenty-three thousand, ninety-one".