1212002002 has 8 divisors (see below), whose sum is σ = 1836745596. Its totient is φ = 599753472.

The previous prime is 1212001981. The next prime is 1212002003. The reversal of 1212002002 is 2002002121.

It can be written as a sum of positive squares in 2 ways, for example, as 1127012041 + 84989961 = 33571^2 + 9219^2 .

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

1212002002 is a modest number, since divided by 2002 gives 1212 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1212002002.

It is not an unprimeable number, because it can be changed into a prime (1212002003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123523 + ... + 3123910.

Almost surely, 2^1212002002 is an apocalyptic number.

1212002002 is a deficient number, since it is larger than the sum of its proper divisors (624743594).

1212002002 is an equidigital number, since it uses as much as digits as its factorization.

1212002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247532.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1212002002 is about 34813.8191240203. The cubic root of 1212002002 is about 1066.1896093066.

Adding to 1212002002 its reverse (2002002121), we get a palindrome (3214004123).

It can be divided in two parts, 121 and 2002002, that multiplied together give a palindrome (242242242).

The spelling of 1212002002 in words is "one billion, two hundred twelve million, two thousand, two".