1200120013 has 8 divisors (see below), whose sum is σ = 1270991808. Its totient is φ = 1130805984.

The previous prime is 1200120011. The next prime is 1200120017. The reversal of 1200120013 is 3100210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200120013 - 2¹ = 1200120011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120011) 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 in 7 ways as a sum of consecutive naturals, for example, 387856 + ... + 390937.

It is an arithmetic number, because the mean of its divisors is an integer number (158873976).

Almost surely, 2^1200120013 is an apocalyptic number.

It is an amenable number.

1200120013 is a deficient number, since it is larger than the sum of its proper divisors (70871795).

1200120013 is an equidigital number, since it uses as much as digits as its factorization.

1200120013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778883.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1200120013 is about 34642.7483465155. The cubic root of 1200120013 is about 1062.6939937914.

Adding to 1200120013 its reverse (3100210021), we get a palindrome (4300330034).

The spelling of 1200120013 in words is "one billion, two hundred million, one hundred twenty thousand, thirteen".