4002128212 has 6 divisors (see below), whose sum is σ = 7003724378. Its totient is φ = 2001064104.

The previous prime is 4002128191. The next prime is 4002128239. The reversal of 4002128212 is 2128212004.

4002128212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3894259216 + 107868996 = 62404^2 + 10386^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500266023 + ... + 500266030.

Almost surely, 2^4002128212 is an apocalyptic number.

It is an amenable number.

4002128212 is a deficient number, since it is larger than the sum of its proper divisors (3001596166).

4002128212 is a wasteful number, since it uses less digits than its factorization.

4002128212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000532057 (or 1000532055 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 4002128212 is about 63262.3759591750. The cubic root of 4002128212 is about 1587.6825292178.

The spelling of 4002128212 in words is "four billion, two million, one hundred twenty-eight thousand, two hundred twelve".