211021012 has 6 divisors (see below), whose sum is σ = 369286778. Its totient is φ = 105510504.

The previous prime is 211021009. The next prime is 211021039. The reversal of 211021012 is 210120112.

211021012 is digitally balanced in base 3, 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., 210656196 + 364816 = 14514^2 + 604^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211021012.

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, 26377623 + ... + 26377630.

Almost surely, 2^211021012 is an apocalyptic number.

It is an amenable number.

211021012 is a deficient number, since it is larger than the sum of its proper divisors (158265766).

211021012 is a wasteful number, since it uses less digits than its factorization.

211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52755257 (or 52755255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 211021012 is about 14526.5622911961. The cubic root of 211021012 is about 595.3539423670.

Adding to 211021012 its reverse (210120112), we get a palindrome (421141124).

The spelling of 211021012 in words is "two hundred eleven million, twenty-one thousand, twelve".