1200120002 has 4 divisors (see below), whose sum is σ = 1800180006. Its totient is φ = 600060000.

The previous prime is 1200119993. The next prime is 1200120007. The reversal of 1200120002 is 2000210021.

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

It can be written as a sum of positive squares in only one way, i.e., 930799081 + 269320921 = 30509^2 + 16411^2 .

It is not an unprimeable number, because it can be changed into a prime (1200120007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300029999 + ... + 300030002.

Almost surely, 2^1200120002 is an apocalyptic number.

1200120002 is a deficient number, since it is larger than the sum of its proper divisors (600060004).

1200120002 is an equidigital number, since it uses as much as digits as its factorization.

1200120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600060003.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1200120002 is about 34642.7481877521. The cubic root of 1200120002 is about 1062.6939905446.

Adding to 1200120002 its reverse (2000210021), we get a palindrome (3200330023).

The spelling of 1200120002 in words is "one billion, two hundred million, one hundred twenty thousand, two".