211148650 has 12 divisors (see below), whose sum is σ = 392736582. Its totient is φ = 84459440.

The previous prime is 211148629. The next prime is 211148683. The reversal of 211148650 is 56841112.

It can be written as a sum of positive squares in 3 ways, for example, as 191850201 + 19298449 = 13851^2 + 4393^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2111437 + ... + 2111536.

Almost surely, 2^211148650 is an apocalyptic number.

211148650 is a deficient number, since it is larger than the sum of its proper divisors (181587932).

211148650 is a wasteful number, since it uses less digits than its factorization.

211148650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222985 (or 4222980 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 211148650 is about 14530.9548894765. The cubic root of 211148650 is about 595.4739532763.

Adding to 211148650 its reverse (56841112), we get a palindrome (267989762).

The spelling of 211148650 in words is "two hundred eleven million, one hundred forty-eight thousand, six hundred fifty".