1201334123 has 4 divisors (see below), whose sum is σ = 1310546328. Its totient is φ = 1092121920.

The previous prime is 1201334117. The next prime is 1201334159. The reversal of 1201334123 is 3214331021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201334123 - 2⁸ = 1201333867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201334095 and 1201334104.

It is not an unprimeable number, because it can be changed into a prime (1201334923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54606086 + ... + 54606107.

It is an arithmetic number, because the mean of its divisors is an integer number (327636582).

Almost surely, 2^1201334123 is an apocalyptic number.

1201334123 is a deficient number, since it is larger than the sum of its proper divisors (109212205).

1201334123 is a wasteful number, since it uses less digits than its factorization.

1201334123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109212204.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1201334123 is about 34660.2672090104. The cubic root of 1201334123 is about 1063.0522336746.

Adding to 1201334123 its reverse (3214331021), we get a palindrome (4415665144).

The spelling of 1201334123 in words is "one billion, two hundred one million, three hundred thirty-four thousand, one hundred twenty-three".