1212000002 has 4 divisors (see below), whose sum is σ = 1818000006. Its totient is φ = 606000000.

The previous prime is 1211999993. The next prime is 1212000011. The reversal of 1212000002 is 2000002121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2000002121 = 13 ⋅153846317.

It is an interprime number because it is at equal distance from previous prime (1211999993) and next prime (1212000011).

It can be written as a sum of positive squares in only one way, i.e., 818017201 + 393982801 = 28601^2 + 19849^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 302999999 + ... + 303000002.

Almost surely, 2^1212000002 is an apocalyptic number.

1212000002 is a deficient number, since it is larger than the sum of its proper divisors (606000004).

1212000002 is an equidigital number, since it uses as much as digits as its factorization.

1212000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606000003.

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

The square root of 1212000002 is about 34813.7903997827. The cubic root of 1212000002 is about 1066.1890228443.

Adding to 1212000002 its reverse (2000002121), we get a palindrome (3212002123).

It can be divided in two parts, 121 and 2000002, that multiplied together give a palindrome (242000242).

The spelling of 1212000002 in words is "one billion, two hundred twelve million, two", and thus it is an aban number.