211012330 has 16 divisors (see below), whose sum is σ = 402165000. Its totient is φ = 79439872.

The previous prime is 211012303. The next prime is 211012343. The reversal of 211012330 is 33210112.

It can be written as a sum of positive squares in 4 ways, for example, as 199459129 + 11553201 = 14123^2 + 3399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211012330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620455 + ... + 620794.

Almost surely, 2^211012330 is an apocalyptic number.

211012330 is a deficient number, since it is larger than the sum of its proper divisors (191152670).

211012330 is a wasteful number, since it uses less digits than its factorization.

211012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241273.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 211012330 is about 14526.2634562368. The cubic root of 211012330 is about 595.3457774079.

Adding to 211012330 its reverse (33210112), we get a palindrome (244222442).

The spelling of 211012330 in words is "two hundred eleven million, twelve thousand, three hundred thirty".