128212012 has 6 divisors (see below), whose sum is σ = 224371028. Its totient is φ = 64106004.

The previous prime is 128211991. The next prime is 128212033. The reversal of 128212012 is 210212821.

It is an interprime number because it is at equal distance from previous prime (128211991) and next prime (128212033).

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, 16026498 + ... + 16026505.

Almost surely, 2^128212012 is an apocalyptic number.

It is an amenable number.

128212012 is a deficient number, since it is larger than the sum of its proper divisors (96159016).

128212012 is a wasteful number, since it uses less digits than its factorization.

128212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32053007 (or 32053005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 128212012 is about 11323.0743175164. The cubic root of 128212012 is about 504.2465147884.

Adding to 128212012 its reverse (210212821), we get a palindrome (338424833).

The spelling of 128212012 in words is "one hundred twenty-eight million, two hundred twelve thousand, twelve".