1211233000123 has 2 divisors, whose sum is σ = 1211233000124. Its totient is φ = 1211233000122.

The previous prime is 1211233000099. The next prime is 1211233000157. The reversal of 1211233000123 is 3210003321121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211233000123 - 2²⁹ = 1210696129211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211233000123.

It is not a weakly prime, because it can be changed into another prime (1211233000183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605616500061 + 605616500062.

It is an arithmetic number, because the mean of its divisors is an integer number (605616500062).

Almost surely, 2^{1211233000123} is an apocalyptic number.

1211233000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211233000123 is an equidigital number, since it uses as much as digits as its factorization.

1211233000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1211233000123 its reverse (3210003321121), we get a palindrome (4421236321244).

The spelling of 1211233000123 in words is "one trillion, two hundred eleven billion, two hundred thirty-three million, one hundred twenty-three", and thus it is an aban number.