1212120002 has 8 divisors (see below), whose sum is σ = 1828690236. Its totient is φ = 602556592.

The previous prime is 1212119999. The next prime is 1212120011. The reversal of 1212120002 is 2000212121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1200553201 + 11566801 = 34649^2 + 3401^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751273 + ... + 1751964.

Almost surely, 2^1212120002 is an apocalyptic number.

1212120002 is a deficient number, since it is larger than the sum of its proper divisors (616570234).

1212120002 is a wasteful number, since it uses less digits than its factorization.

1212120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503412.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1212120002 is about 34815.5138120924. The cubic root of 1212120002 is about 1066.2242094396.

Adding to 1212120002 its reverse (2000212121), we get a palindrome (3212332123).

It can be divided in two parts, 12121 and 20002, that multiplied together give a palindrome (242444242).

The spelling of 1212120002 in words is "one billion, two hundred twelve million, one hundred twenty thousand, two".