211650650 has 12 divisors (see below), whose sum is σ = 393670302. Its totient is φ = 84660240.

The previous prime is 211650643. The next prime is 211650653. The reversal of 211650650 is 56056112.

It can be written as a sum of positive squares in 3 ways, for example, as 206123449 + 5527201 = 14357^2 + 2351^2 .

It is not an unprimeable number, because it can be changed into a prime (211650653) 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 5 ways as a sum of consecutive naturals, for example, 2116457 + ... + 2116556.

Almost surely, 2^211650650 is an apocalyptic number.

211650650 is a deficient number, since it is larger than the sum of its proper divisors (182019652).

211650650 is a wasteful number, since it uses less digits than its factorization.

211650650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233025 (or 4233020 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 211650650 is about 14548.2181039466. The cubic root of 211650650 is about 595.9454873344.

The spelling of 211650650 in words is "two hundred eleven million, six hundred fifty thousand, six hundred fifty".