2002121312 has 24 divisors (see below), whose sum is σ = 3944417400. Its totient is φ = 1000364544.

The previous prime is 2002121309. The next prime is 2002121351. The reversal of 2002121312 is 2131212002.

It is a happy number.

It is a congruent number.

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, 26639 + ... + 68657.

It is an arithmetic number, because the mean of its divisors is an integer number (164350725).

Almost surely, 2^2002121312 is an apocalyptic number.

It is an amenable number.

2002121312 is a deficient number, since it is larger than the sum of its proper divisors (1942296088).

2002121312 is a wasteful number, since it uses less digits than its factorization.

2002121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43518 (or 43510 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2002121312 is about 44745.0702536045. The cubic root of 2002121312 is about 1260.3663401057.

Adding to 2002121312 its reverse (2131212002), we get a palindrome (4133333314).

The spelling of 2002121312 in words is "two billion, two million, one hundred twenty-one thousand, three hundred twelve".