1200121113 has 8 divisors (see below), whose sum is σ = 1602446976. Its totient is φ = 798938000.

The previous prime is 1200121093. The next prime is 1200121121. The reversal of 1200121113 is 3111210021.

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 1200121113 - 2⁵ = 1200121081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200121513) 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, 283233 + ... + 287438.

It is an arithmetic number, because the mean of its divisors is an integer number (200305872).

Almost surely, 2^1200121113 is an apocalyptic number.

It is an amenable number.

1200121113 is a deficient number, since it is larger than the sum of its proper divisors (402325863).

1200121113 is an equidigital number, since it uses as much as digits as its factorization.

1200121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571375.

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

The square root of 1200121113 is about 34642.7642228503. The cubic root of 1200121113 is about 1062.6943184709.

Adding to 1200121113 its reverse (3111210021), we get a palindrome (4311331134).

The spelling of 1200121113 in words is "one billion, two hundred million, one hundred twenty-one thousand, one hundred thirteen".