211002012 has 36 divisors (see below), whose sum is σ = 574395640. Its totient is φ = 64923552.

The previous prime is 211001981. The next prime is 211002013. The reversal of 211002012 is 210200112.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211001985 and 211002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002013) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 224962 + ... + 225897.

Almost surely, 2^211002012 is an apocalyptic number.

It is an amenable number.

211002012 is an abundant number, since it is smaller than the sum of its proper divisors (363393628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211002012 is a wasteful number, since it uses less digits than its factorization.

211002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450882 (or 450877 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 211002012 is about 14525.9083020650. The cubic root of 211002012 is about 595.3360735865.

Adding to 211002012 its reverse (210200112), we get a palindrome (421202124).

The spelling of 211002012 in words is "two hundred eleven million, two thousand, twelve".