1201144123 has 2 divisors, whose sum is σ = 1201144124. Its totient is φ = 1201144122.

The previous prime is 1201144099. The next prime is 1201144169. The reversal of 1201144123 is 3214411021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201144123 - 2¹³ = 1201135931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201144123.

It is not a weakly prime, because it can be changed into another prime (1201144193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600572061 + 600572062.

It is an arithmetic number, because the mean of its divisors is an integer number (600572062).

Almost surely, 2^1201144123 is an apocalyptic number.

1201144123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201144123 is an equidigital number, since it uses as much as digits as its factorization.

1201144123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1201144123 is about 34657.5262100456. The cubic root of 1201144123 is about 1062.9961874924.

Adding to 1201144123 its reverse (3214411021), we get a palindrome (4415555144).

The spelling of 1201144123 in words is "one billion, two hundred one million, one hundred forty-four thousand, one hundred twenty-three".